Jurassic World III

Jurassic World: 3
Directed by	Colin Trevorrow
Produced by	Steven Spielberg
Written by	Colin Trevorrow; Emily Carmichael
Starring	Chris Pratt; Bryce Dallas Howard; Jeff Goldblum; Laura Dern; Isabella Sermon;
Music by	Michael Giacchino
Cinematography	Óscar Faura
Edited by	Bernat Vilaplana
Production; companies	Universal Pictures;
Distributed by	Universal Pictures
Release date	June 11, 2021;

Search Jurassic World III on Amazon.

Jurassic World III, also dubbed Jurassic World 3 is the title for the sequel to Jurassic World: Fallen Kingdom (2018). The sequel was first confirmed by Fallen Kingdom director, Juan Antonio Bayona in 2016.^[2]

In January 2010, Joe Johnston was interviewed by the Box Office Magazine. He talked about the upcoming Jurassic Park sequel trilogy:

"Well, there is going to be a Jurassic Park IV. It breaks away from the first three - it's essentially the beginning of the second Jurassic Park trilogy."^[3]

Colin Trevorrow in an interview with JurassicCast confirmed that there will be a trilogy. Over the course of the trilogy, Claire's character would evolve the most, mirroring the changing world.^[4]^[2]

In February 2018, Universal listed Jurassic World 3 with a tentative release date of June 11, 2021.^[5]

Two new characters will be in the movie, Zane Maxin and an unknown female paleo-vet.^[6]

Colin announced that the sixth film won't involve dinosaurs destroying cities.^[7]

🦖 Infraorder Ceratosauria

Family Podokesauridae

Species: Coelophysis bauri
Meaning: Hollow form
Diet: Carnivore (small animals, insects, reptiles)
Epoch/Stage/Years: Late Triassic / Norian to Rhaetian / 228–201.3 million years ago
Origin (Franchise): Walking with Dinosaurs (1999) — Starred in "New Blood"
Estimated Length & Height: 3 meters (9.8 feet) long / 0.9 meters (3 feet) tall
Weight: 15 to 25 kg (33 to 55 lbs)
Collected: David Baldwin (1881)
Status/Author/Year: Valid / Edward Drinker Cope / 1889
Area/Locality/Formation: New Mexico, USA / Ghost Ranch / Chinle Formation
Yen Sid's Comments:
"A lean and hungry shadow from the dawn of the reptilian age. It survived not by overwhelming force, but by outrunning the slow, ancient monsters of the Triassic waters. Quick wits and agile feet are often the truest magic when the world begins to change."
Species: Procompsognathus triassicus
Meaning: Before elegant jaw
Diet: Insectivore / Carnivore (small vertebrates)
Epoch/Stage/Years: Late Triassic / Norian / 210 million years ago
Origin (Franchise): Michael Crichton's Jurassic Park Novel (1990) — Infamous for the initial beach attack
Estimated Length & Height: 1 meter (3.3 feet) long / 25 centimeters (10 inches) tall
Weight: 1 kg (2.2 lbs)
Collected: Albert Burrer (1909)
Status/Author/Year: Valid / Eberhard Fraas / 1913
Area/Locality/Formation: Baden-Württemberg, Germany / Stubensandstein Formation
Yen Sid's Comments:
"Do not let its trivial size deceive your eyes. In great numbers, a swarm of small, biting teeth can fell a giant just as easily as an unchecked army of enchanted brooms. True peril frequently arrives cloaked in a minuscule form."

Family Ceratosauridae

Species: Ceratosaurus nasicornis
Meaning: Horned lizard
Diet: Carnivore (large fish, sauropods, ornithopods)
Epoch/Stage/Years: Late Jurassic / Kimmeridgian to Tithonian / 153–148 million years ago
Origin (Franchise): Fantasia (1940) — Seen stuck in the mud during the extinction segment
Estimated Length & Height: 6 to 7 meters (20 to 23 feet) long / 2 meters (6.5 feet) tall at hips
Weight: 520 to 1,000 kg (1,146 to 2,205 lbs)
Collected: Marshall Parker Felch (1883)
Status/Author/Year: Valid / Othniel Charles Marsh / 1884
Area/Locality/Formation: Colorado & Utah, USA / Garden Park / Morrison Formation
Yen Sid's Comments:
"The horn upon its snout serves as a stern reminder of pride. It walked with an ancient authority, yet it was destined to be eclipsed by larger tyrants. One must never mistake a decorative crest for absolute dominion over others."

Family Dilophosauridae

Species: Dilophosaurus wetherilli
Meaning: Two-crested lizard
Diet: Carnivore (medium-sized dinosaurs, fish)
Epoch/Stage/Years: Early Jurassic / Sinemurian / 193 million years ago
Origin (Franchise): Jurassic Park (1993) — Famously depicted with a fictional frill and venom
Estimated Length & Height: 7 meters (23 feet) long / 2 meters (6.5 feet) tall
Weight: 400 kg (880 lbs)
Collected: Jesse Williams (1942)
Status/Author/Year: Valid / Samuel P. Welles / 1970
Area/Locality/Formation: Arizona, USA / Navajo Nation / Kayenta Formation
Yen Sid's Comments:
"The twin crests are a brilliant display of nature's showmanship. Modern tales weave fables of blinding spit and folding frills around this creature—a reminder of how human imagination loves to enhance the natural sorcery of the ancient past."

Family Abelisauridae

Species: Carnotaurus sastrei
Meaning: Meat-eating bull
Diet: Carnivore (fast, agile prey)
Epoch/Stage/Years: Late Cretaceous / Campanian to Maastrichtian / 71–69 million years ago
Origin (Franchise): Disney's Dinosaur (2000) — Served as the primary antagonist terrifying the herd
Estimated Length & Height: 7.8 meters (25.6 feet) long / 2.5 meters (8.2 feet) tall
Weight: 1,350 kg (1.5 short tons)
Collected: José Bonaparte (1984)
Status/Author/Year: Valid / José Bonaparte / 1985
Area/Locality/Formation: Chubut Province, Argentina / La Colonia Formation
Yen Sid's Comments:
"A true demonic vision with horns like a bull and arms shriveled to nothingness. It pursued its quarry like an arrow shot from a bow. Nature sometimes shapes creatures so bizarre they appear born from a dark enchantment."
Species: Majungasaurus crenatissimus
Meaning: Mahajanga lizard
Diet: Carnivore (Sauropods, known cannibalistic tendencies)
Epoch/Stage/Years: Late Cretaceous / Maastrichtian / 70–66 million years ago
Origin (Franchise): Jurassic World (2015) — Genetically integrated into the Indominus rex genome
Estimated Length & Height: 7 meters (23 feet) long / 2 meters (6.5 feet) tall
Weight: 1,100 kg (2,400 lbs)
Collected: Charles Depéret (1895)
Status/Author/Year: Valid / Lavocat / 1955
Area/Locality/Formation: Mahajanga Province, Madagascar / Maevarano Formation
Yen Sid's Comments:
"Isolated upon a vast island, this predator turned upon its own kind when resources grew thin. Cannibalism is a grim, tragic reflection of a desperate world where the laws of survival override all harmony."

🦖 Infraorder Carnosauria

Family Megalosauridae

Species: Acrocanthosaurus atokensis
Meaning: High-spined lizard
Diet: Carnivore (Apex predator of large sauropods)
Epoch/Stage/Years: Early Cretaceous / Aptian to Albian / 113–110 million years ago
Origin (Franchise): Primal Carnage (2012) — Playable heavyweight predator class
Estimated Length & Height: 11.5 meters (38 feet) long / 3.9 meters (13 feet) tall
Weight: 5,700 to 6,200 kg (6.3 to 6.8 short tons)
Collected: J. Willis Stovall & Wann Langston Jr. (1940s)
Status/Author/Year: Valid / Stovall & Langston / 1950
Area/Locality/Formation: Oklahoma & Texas, USA / Antlers Formation
Yen Sid's Comments:
"The ridges along its spine formed a great sail, a banner of flesh carried into battle against towering long-necked giants. It ruled its era with an iron jaw long before the tyrant kings ever drew breath."
Species: Eustreptospondylus oxoniensis
Meaning: True well-curved vertebra
Diet: Carnivore (Fish, marine reptiles, island carcasses)
Epoch/Stage/Years: Middle Jurassic / Callovian / 163 million years ago
Origin (Franchise): Walking with Dinosaurs (1999) — Portrayed as an island-hopping beachcomber
Estimated Length & Height: 4.6 meters (15 feet) long / 1.5 meters (5 feet) tall
Weight: 200 to 250 kg (440 to 550 lbs)
Collected: Clay pit workers (1870)
Status/Author/Year: Valid / Sir Richard Owen / 1842 (Reclassified by Walker, 1964)
Area/Locality/Formation: Oxfordshire, England / Oxford Clay Formation
Yen Sid's Comments:
"A wanderer of ancient shorelines, combing the beaches for what the tides brought in. Even a fierce carnivore must learn to adapt when the deep waters divide the land into tiny kingdoms."
Species: Giganotosaurus carolinii
Meaning: Giant southern lizard
Diet: Carnivore (Sauropod hunter)
Epoch/Stage/Years: Late Cretaceous / Cenomanian / 98–97 million years ago
Origin (Franchise): Jurassic World Dominion (2022) — The biological apex antagonist of the film
Estimated Length & Height: 12.5 to 13.2 meters (41–43 feet) long / 4 meters (13 feet) tall
Weight: 7,000 to 8,200 kg (7.7 to 9 tons)
Collected: Rubén D. Carolini (1993)
Status/Author/Year: Valid / Coria & Salgado / 1995
Area/Locality/Formation: Neuquén Province, Argentina / Candeleros Formation
Yen Sid's Comments:
"A titan from the southern horizons that challenged the very boundaries of how large a land predator could grow. Its teeth were like serrated daggers, designed to carve flesh from beasts as massive as moving mountains."
Species: Poekilopleuron bucklandii
Meaning: Varied ribs
Diet: Carnivore
Epoch/Stage/Years: Middle Jurassic / Bathonian / 168–166 million years ago
Origin (Franchise): Classic Paleoart History — One of the earliest discovered theropods alongside Megalosaurus
Estimated Length & Height: 7 meters (23 feet) long / 2 meters (6.5 feet) tall
Weight: 1,000 kg (2,200 lbs)
Collected: Pierre-Anselme De la Fontenelle (1835)
Status/Author/Year: Valid / Jacques Amand Eudes-Deslongchamps / 1838
Area/Locality/Formation: Normandy, France / Calcaire de Caen
Yen Sid's Comments:
"An ancient relic whose bones were tragically shattered by the fires of human war in 1944. It teaches us that history is fragile, and what took millions of years for the earth to preserve can vanish in a single human heartbeat."
Species: Proceratosaurus bradleyi
Meaning: Before Ceratosaurus
Diet: Carnivore (small animals)
Epoch/Stage/Years: Middle Jurassic / Bathonian / 166 million years ago
Origin (Franchise): Jurassic Park (1993) — Name briefly visible on an embryo cold storage vial
Estimated Length & Height: 3 meters (9.8 feet) long / 1 meter (3.3 feet) tall
Weight: 40 kg (88 lbs)
Collected: F. Lewis Bradley (1910)
Status/Author/Year: Valid / Arthur Smith Woodward / 1910
Area/Locality/Formation: Gloucestershire, England / Great Oolite Group
Yen Sid's Comments:
"A modest hunter with a small horn-like ridge on its nose. For a long time, men mistook its lineage, proving that in science, as in magic, a surface illusion can easily mask your true ancestral origins."
Species: Yutyrannus huali
Meaning: Feathered tyrant / Beautiful
Diet: Carnivore (pack hunter)
Epoch/Stage/Years: Early Cretaceous / Aptian / 125 million years ago
Origin (Franchise): Ark: Survival Evolved (2017) — Known for its terrifying, courage-draining roar
Estimated Length & Height: 9 meters (29.5 feet) long / 2.7 meters (9 feet) tall
Weight: 1,400 kg (1.5 short tons)
Collected: Fossil dealers / Unknown farmer (2011)
Status/Author/Year: Valid / Xu Xing et al. / 2012
Area/Locality/Formation: Liaoning Province, China / Yixian Formation
Yen Sid's Comments:
"A tyrant cloaked in a thick winter coat of shaggy feathers. It proves that even the most brutal killer can wear a soft, deceptively delicate shroud to survive the icy breath of a colder world."

Family Allosauridae

Species: Allosaurus europaeus
Meaning: Different lizard (European)
Diet: Carnivore (Stegosaurs, sauropods)
Epoch/Stage/Years: Late Jurassic / Kimmeridgian / 150 million years ago
Origin (Franchise): Dinosaur Revolution (2011) — Portrayed in the European late Jurassic ecosystems
Estimated Length & Height: 12 meters (39.4 feet) long / 4.2 meters (13.4 feet) tall
Weight: 1,000 kg (2,200 lbs)
Collected: Octávio Mateus et al. (1999)
Status/Author/Year: Valid / Mateus et al. / 2006
Area/Locality/Formation: Estremadura, Portugal; Wyoming & New Mexico, USA / Porto Novo / Lourinhã; Morrison Formation
Yen Sid's Comments:
"The classic 'different lizard' crossed great ancient continents to plant its lineage in European soil. It possessed a gaping bite that struck like an executioner’s axe, a master of its Jurassic craft."
Species: Yangchuanosaurus zigongensis
Meaning: Yangchuan lizard (from Zigong)
Diet: Carnivore (Sauropods, structural generalist)
Epoch/Stage/Years: Middle Jurassic / Bathonian to Callovian / 165 million years ago
Origin (Franchise): Planet Dinosaur (2011) — Showcased hunting in Asian Jurassic forests
Estimated Length & Height: 8 meters (26 feet) long / 2.5 meters (8.2 feet) tall
Weight: 1,300 kg (1.4 short tons)
Collected: Dong Zhiming et al. (1977)
Status/Author/Year: Valid / Gao / 1993
Area/Locality/Formation: Sichuan, China / Xiashaximiao Formation
Yen Sid's Comments:
"An old, heavily-built lord of the Asian forests. It bore ridges and nodules upon its skull like a crude, bony crown. It ruled over massive long-necks with patient, predatory cunning."

Family Spinosauridae

Species: Baryonyx walkeri
Meaning: Heavy claw
Diet: Piscivore / Carnivore (Specialized fish hunter, Iguanodonts)
Epoch/Stage/Years: Early Cretaceous / Barremian / 125–120 million years ago
Origin (Franchise): Ice Age: Dawn of the Dinosaurs (2009) — Inspiring the colossal antagonist "Rudy"
Estimated Length & Height: 9.5 meters (31 feet) long / 2.5 meters (8.2 feet) tall
Weight: 1,700 to 2,000 kg (1.9 to 2.2 short tons)
Collected: William J. Walker (1983)
Status/Author/Year: Valid / Alan J. Charig & Angela C. Milner / 1986
Area/Locality/Formation: Surrey, England / Smokejacks Pit / Weald Clay Formation
Yen Sid's Comments:
"With a thumb hook like a giant iron scythe, it snatched scaly prey from the rushing waters. It turned away from the land to conquer the rivers, proving that water holds secrets and treasures for those who adapt to its depths."
Species: Spinosaurus aegyptiacus
Meaning: Spine lizard (Egyptian)
Diet: Piscivore / Carnivore (Semi-aquatic generalist)
Epoch/Stage/Years: Late Cretaceous / Cenomanian / 99–93.5 million years ago
Origin (Franchise): Jurassic Park III (2001) — Snapped the neck of a T. rex in a controversial duel
Estimated Length & Height: 14 meters (46 feet) long / 4 meters (13 feet) tall (including sail)
Weight: 7,400 kg (8.1 short tons)
Collected: Richard Markgraf (1912)
Status/Author/Year: Valid / Ernst Stromer / 1915
Area/Locality/Formation: Bahariya Oasis, Egypt / Bahariya Formation
Yen Sid's Comments:
"A river dragon with a sail like a great ships' canvas. It swam where crocodiles grew as long as trees. A magnificent testament to nature's capacity to merge the worlds of water and earth into one gargantuan form."
Species: Suchomimus tenerensis
Meaning: Crocodile mimic
Diet: Piscivore / Carnivore
Epoch/Stage/Years: Early Cretaceous / Aptian / 121–113 million years ago
Origin (Franchise): Warpath: Jurassic Park (1999) — Featured as a tall, agile arena fighter
Estimated Length & Height: 11 meters (36 feet) long / 3 meters (10 feet) tall
Weight: 3,000 to 5,200 kg (3.3 to 5.7 short tons)
Collected: Team led by Paul Sereno (1997)
Status/Author/Year: Valid / Sereno et al. / 1998
Area/Locality/Formation: Tenere Desert, Niger / Gadoufaoua / Elrhaz Formation
Yen Sid's Comments:
"Its long, narrow jaws housed a hundred teeth designed to pin struggling fish. It wore a modest ridge upon its back, a quiet precursor to its flashier Egyptian cousin."

Family Tyrannosauridae

Species: Albertosaurus sarcophagus
Meaning: Alberta lizard / Flesh-eater
Diet: Carnivore (Hadrosaurs, Ceratopsians)
Epoch/Stage/Years: Late Cretaceous / Early Maastrichtian / 71–68 million years ago
Origin (Franchise): Prehistoric Park (2006) — Nigel Marven encounters a pack hunting in the woods
Estimated Length & Height: 9 meters (30 feet) long / 2.8 meters (9.2 feet) tall
Weight: 2,500 kg (2.7 short tons)
Collected: Joseph B. Tyrrell (1884)
Status/Author/Year: Valid / Henry Fairfield Osborn / 1905
Area/Locality/Formation: Alberta, Canada / Horseshoe Canyon Formation
Yen Sid's Comments:
"Lighter and swifter than the rex, this tyrant relied on sheer speed and coordinated social packs to run down its quarry. Numbers and speed can conquer what brute force alone cannot reach."
Species: Gorgosaurus libratus
Meaning: Dreadful lizard / Balanced
Diet: Carnivore (Centrosaurines, Hadrosaurs)
Epoch/Stage/Years: Late Cretaceous / Campanian / 76.6–75.1 million years ago
Origin (Franchise): Walking with Dinosaurs: The Movie (2013) — Played the primary antagonist "Gorgon"
Estimated Length & Height: 8 to 9 meters (26–30 feet) long / 2.7 meters (9 feet) tall
Weight: 2,400 kg (2.6 short tons)
Collected: Lawrence Lambe (1913)
Status/Author/Year: Valid / Lawrence Lambe / 1914
Area/Locality/Formation: Alberta, Canada / Dinosaur Park Formation
Yen Sid's Comments:
"A fierce, terrifying stalker that filled the northern floodplains with dread. Its legs were built for long, grueling pursuits, a relentless executioner of the late Cretaceous glades."
Species: Qianzhousaurus sinensis
Meaning: Qianzhou lizard (nicknamed "Pinocchio rex")
Diet: Carnivore (smaller, nimbler dinosaurs)
Epoch/Stage/Years: Late Cretaceous / Maastrichtian / 67–66 million years ago
Origin (Franchise): Dinosaur Revolution (2011) — Featured as a long-snouted, cunning predator
Estimated Length & Height: 9 meters (30 feet) long / 2.5 meters (8.2 feet) tall
Weight: 750 to 1,000 kg (1.1 short tons)
Collected: Construction workers (2010)
Status/Author/Year: Valid / Lü Junchang et al. / 2014
Area/Locality/Formation: Ganzhou, China / Nanxiong Formation
Yen Sid's Comments:
"A tyrant with a nose as long as a flute. It traded the bone-crushing power of its North American cousins for a delicate, rapid snap. There are many paths to becoming a king."
Species: Tarbosaurus bataar
Meaning: Alarming lizard / Hero
Diet: Carnivore (Sauropods like Nemegtosaurus, Hadrosaurs)
Epoch/Stage/Years: Late Cretaceous / Maastrichtian / 70–66 million years ago
Origin (Franchise): The Dino King (2012) — Followed the life story of Speckles the Tarbosaurus
Estimated Length & Height: 10 to 12 meters (33–40 feet) long / 3.3 meters (11 feet) tall
Weight: 4,500 to 5,000 kg (5 short tons)
Collected: Soviet-Mongolian expeditions (1946)
Status/Author/Year: Valid / Evgeny Maleev / 1955
Area/Locality/Formation: Omnogovi Province, Mongolia / Nemegt Formation
Yen Sid's Comments:
"The tyrant ruler of the Asian deserts. It had arms even smaller and more locked away than the rex, but its skull was a rigid, unyielding block of pure predatory power."
Species: Tyrannosaurus rex
Meaning: Tyrant lizard king
Diet: Carnivore (Apex predator / Scavenger)
Epoch/Stage/Years: Late Cretaceous / Maastrichtian / 68–66 million years ago
Origin (Franchise): Fantasia (1940) — Ignited the screen during Igor Stravinsky's "Rite of Spring" sequence
Estimated Length & Height: 15 meters (49 feet) long / 4.7 meters (15 feet) tall at hips
Weight: 8,400 to 14,000 kg (9.3 to 15.4 short tons)
Collected: Barnum Brown (1902)
Status/Author/Year: Valid / Henry Fairfield Osborn / 1905
Area/Locality/Formation: Montana, USA / Hell Creek Formation
Yen Sid's Comments:
"The absolute pinnacle of primal majesty. When it marched out from the lightning storms of our animated tapestry, it embodied the raw, untamed wrath of nature itself. A king that requires no crown to demand total submission."

🦖 Infraorder Coelurosauria

Family Coeluridae

Species: Coelurus fragilis
Meaning: Hollow tail / Fragile
Diet: Carnivore / Insectivore
Epoch/Stage/Years: Late Jurassic / Tithonian / 150 million years ago
Origin (Franchise): Jurassic Park (1993) — Listed on the original park map brochure
Estimated Length & Height: 2.4 meters (7.9 feet) long / 0.7 meters (2.3 feet) tall
Weight: 13 to 20 kg (29 to 44 lbs)
Collected: Samuel Wendell Williston (1879)
Status/Author/Year: Valid / Othniel Charles Marsh / 1879
Area/Locality/Formation: Wyoming, USA / Como Bluff / Morrison Formation
Yen Sid's Comments:
"A delicate, ghost-like creature that darted between the feet of giant sauropods. Its bones were light as straw, showing that stealth and fragility can outlast the heaviest armor if you stay out of sight."
Species: Moros intrepidus
Meaning: Doom / Intrepid
Diet: Carnivore (small game)
Epoch/Stage/Years: Late Cretaceous / Cenomanian / 96 million years ago
Origin (Franchise): Jurassic World Dominion (2022) — Seen cleaning the teeth of a giant Giganotosaurus
Estimated Length & Height: 1.2 meters (4 feet) long / 0.5 meters (1.6 feet) tall
Weight: 78 kg (172 lbs)
Collected: Lindsay Zanno (2013)
Status/Author/Year: Valid / Lindsay Zanno et al. / 2019
Area/Locality/Formation: Utah, USA / Cedar Mountain Formation
Yen Sid's Comments:
"A small herald of 'doom' that carried the evolutionary seed of the great tyrants. It started tiny, waiting patiently in the shadows while other monsters ruled, a lesson that great empires often have humble, quiet beginnings."
Species: Nanotyrannus lethaeus
Meaning: Dwarf tyrant / Oblivion
Diet: Carnivore
Epoch/Stage/Years: Late Cretaceous / Maastrichtian / 68–66 million years ago
Origin (Franchise): Jurassic Fight Club (2008) — Portrayed as a hyper-agile, blade-toothed hunter
Estimated Length & Height: 5.2 meters (17 feet) long / 1.8 meters (6 feet) tall
Weight: 400 to 600 kg (880 to 1,320 lbs)
Collected: Charles M. Sternberg (1942)
Status/Author/Year: Disputed / Robert T. Bakker et al. / 1988
Area/Locality/Formation: Montana, USA / Hell Creek Formation
Yen Sid's Comments:
"Whether a distinct pygmy stalker or merely a young prince growing into the tyrant king's heavy mantle remains a riddle for the scholars. Nature loves to hide its true identity behind the shifting mask of growth."

Family Compsognathidae

Species: Compsognathus longipes
Meaning: Elegant jaw / Long leg
Diet: Carnivore (lizards, insects)
Epoch/Stage/Years: Late Jurassic / Tithonian / 150.8 million years ago
Origin (Franchise): The Lost World: Jurassic Park (1997) — Famously overwhelmed Dieter Stark in a pack
Estimated Length & Height: 1.25 meters (4.1 feet) long / 30 centimeters (12 inches) tall
Weight: 2.5 kg (5.5 lbs)
Collected: Joseph Oberndorfer (1850s)
Status/Author/Year: Valid / Johann Andreas Wagner / 1859
Area/Locality/Formation: Bavaria, Germany / Solnhofen Limestone
Yen Sid's Comments:
"A tiny, delicate creature of exquisite grace. It moved like quicksilver across the lagoons. It proves that beauty and small stature can thrive safely in an age dominated by absolute giants."

Family Ornithomimidae

Species: Archaeornithomimus asiaticus
Meaning: Ancient bird mimic (Asian)
Diet: Omnivore (plants, insects, small animals)
Epoch/Stage/Years: Late Cretaceous / Turonian / 96–89 million years ago
Origin (Franchise): Jurassic World Evolution (2018) — Standard fast-running exhibit dinosaur
Estimated Length & Height: 3.3 meters (11 feet) long / 1.2 meters (4 feet) tall
Weight: 50 kg (110 lbs)
Collected: Roy Chapman Andrews / AMNH Expeditions (1923)
Status/Author/Year: Valid / Dale Russell / 1972
Area/Locality/Formation: Inner Mongolia, China / Iren Dabasu Formation
Yen Sid's Comments:
"An early blueprint for the great ostrich mimics. It abandoned the heavy weaponry of teeth and claws for the simple, pure sorcery of unmatched speed across open terrain."
Species: Dromiceiomimus samueli
Meaning: Emu mimic
Diet: Omnivore
Epoch/Stage/Years: Late Cretaceous / Campanian / 76 million years ago
Origin (Franchise): Dinosaur Comics (2003) — Stars as the witty, intellectual conversationalist
Estimated Length & Height: 3.5 meters (11.5 feet) long / 1.4 meters (4.6 feet) tall
Weight: 100 to 150 kg (220 to 330 lbs)
Collected: Lawrence Lambe (1914)
Status/Author/Year: Valid / Dale Russell / 1972
Area/Locality/Formation: Alberta, Canada / Dinosaur Park Formation
Yen Sid's Comments:
"Enormous eyes set in a lightweight skull allowed it to spot trouble from afar. When your surroundings are packed with giant tyrants, excellent vision and a quick stride are your best protection."
Species: Gallimimus bullatus
Meaning: Rooster mimic
Diet: Omnivore (plants, small invertebrates, eggs)
Epoch/Stage/Years: Late Cretaceous / Maastrichtian / 70 million years ago
Origin (Franchise): Jurassic Park (1993) — "They're flocking this way!" scene running from the T. rex
Estimated Length & Height: 6 meters (20 feet) long / 2 meters (6.5 feet) tall at hips
Weight: 440 kg (970 lbs)
Collected: Polish-Mongolian Palaeontological Expeditions (1964)
Status/Author/Year: Valid / Rinchen Barsbold et al. / 1972
Area/Locality/Formation: Omnogovi Province, Mongolia / Nemegt Formation
Yen Sid's Comments:
"They moved in vast, synchronized flocks like a school of fish fleeing a shark. There is a beautiful, rhythmic sorcery in collective movement where hundreds of minds act instantly as one."
Species: Ornithomimus velox
Meaning: Bird mimic (Swift)
Diet: Omnivore
Epoch/Stage/Years: Late Cretaceous / Maastrichtian / 66 million years ago
Origin (Franchise): Classic Museum Displays — The first ornithomimid ever discovered and named
Estimated Length & Height: 3.8 meters (12.5 feet) long / 1.4 meters (4.6 feet) tall
Weight: 170 kg (370 lbs)
Collected: George Lyman Cannon (1889)
Status/Author/Year: Valid / Othniel Charles Marsh / 1890
Area/Locality/Formation: Colorado, USA / Denver Formation
Yen Sid's Comments:
"A creature built completely out of hollow spaces and long levers. It raced against the sunset of its entire era, proving that speed can outrun many things, but it cannot outrun destiny."
Species: Struthiomimus altus
Meaning: Ostrich mimic (Tall)
Diet: Omnivore / Herbivore
Epoch/Stage/Years: Late Cretaceous / Campanian / 76–75 million years ago
Origin (Franchise): Disney's Dinosaur (2000) — Seen at the beginning stealing an Iguanodon egg
Estimated Length & Height: 4.3 meters (14 feet) long / 1.4 meters (4.6 feet) tall at hips
Weight: 150 kg (330 lbs)
Collected: Lawrence Lambe (1901)
Status/Author/Year: Valid / Lawrence Lambe / 1902 (Reclassified by Osborn, 1917)
Area/Locality/Formation: Alberta, Canada / Dinosaur Park Formation
Yen Sid's Comments:
"A toothless gatherer that made its living on the fringes of great primeval forests. It survived by keeping its head high, its ears sharp, and its powerful legs ready to spring into action."

Family Deinocheiridae

Species: Deinocheirus mirificus
Meaning: Terrible hand / Unusual
Diet: Omnivore (fishes, water plants)
Epoch/Stage/Years: Late Cretaceous / Maastrichtian / 70 million years ago
Origin (Franchise): Prehistoric Planet (2022) — Depicted scratching its back and foraging in swamps
Estimated Length & Height: 15.5 meters (50 feet) long / 5.5 meters (17.5 feet) tall at hips
Weight: 6,400 kg (7 short tons)
Collected: Zofia Kielan-Jaworowska (1965)
Status/Author/Year: Valid / Halszka Osmólska & Ewa Roniewicz / 1970
Area/Locality/Formation: Ömnögovi, Mongolia / Nemegt Formation
Yen Sid's Comments:
"For decades, we only possessed its giant, scythe-like arms—a great mystery of the desert. When the rest of the beast emerged, it revealed a humpbacked, duck-billed giant. A grand reminder that nature's ledger is full of surprises."

Family Oviraptoridae

Species: Chirostenotes pergracilis
Meaning: Narrow-handed / Very graceful
Diet: Omnivore / Carnivore (small prey, eggs)
Epoch/Stage/Years: Late Cretaceous / Campanian / 76.5 million years ago
Origin (Franchise): Dinosaur Train (2009) — Featured as a tall, feather-crested passenger
Estimated Length & Height: 2.1 meters (6.9 feet) long / 1 meter (3.3 feet) tall
Weight: 25 kg (55 lbs)
Collected: George F. Sternberg (1914)
Status/Author/Year: Valid / Lawrence Lambe / 1924
Area/Locality/Formation: Alberta, Canada / Dinosaur Park Formation
Yen Sid's Comments:
"An exceptionally delicate creature with long slender fingers like a pianist or a spellcaster. It plucked small prizes from hidden places with elegant, effortless precision."
Species: Oviraptor philoceratops
Meaning: Egg thief / Ceratopsian-loving
Diet: Omnivore (mollusks, plants, small animals)
Epoch/Stage/Years: Late Cretaceous / Campanian / 75 million years ago
Origin (Franchise): Fantasia (1940) — Briefly seen foraging in the marshlands
Estimated Length & Height: 1.6 meters (5.2 feet) long / 0.8 meters (2.6 feet) tall
Weight: 35 to 40 kg (77 to 88 lbs)
Collected: Roy Chapman Andrews (1923)
Status/Author/Year: Valid / Henry Fairfield Osborn / 1924
Area/Locality/Formation: Ömnögovi, Mongolia / Djadokhta Formation
Yen Sid's Comments:
"Slandered by history as a thief of nests, later discoveries revealed it was actually a devoted parent protecting its own unhatched young. Even in the fossil record, justice can be slow to unmask the truth."

Family Saurornithoididae

Species: Troodon formosus
Meaning: Wounding tooth / Beautiful
Diet: Omnivore / Carnivore (small mammals, birds, plants)
Epoch/Stage/Years: Late Cretaceous / Campanian / 77.5 million years ago
Origin (Franchise): Jurassic Park: The Game (2011) — Portrayed as a venomous, nocturnal pack hunter
Estimated Length & Height: 2.4 meters (7.9 feet) long / 1 meter (3.3 feet) tall
Weight: 50 kg (110 lbs)
Collected: Ferdinand Vandeveer Hayden (1855)
Status/Author/Year: Dubious taxon / Joseph Leidy / 1856
Area/Locality/Formation: Montana, USA / Judith River Formation
Yen Sid's Comments:
"Possessing a massive brain for its size and large, glowing night-eyes. Had the stars aligned differently, its spark of intellect might have kindled a completely different kind of world."

Family Therizinosauridae

Species: Therizinosaurus cheloniformis
Meaning: Scythe lizard / Turtle-formed
Diet: Herbivore (Specialized foliage gatherer)
Epoch/Stage/Years: Late Cretaceous / Maastrichtian / 70 million years ago
Origin (Franchide): Jurassic World Dominion (2022) — Blind giant with terrifying three-meter claws that stalked Claire Dearing
Estimated Length & Height: 10 meters (33 feet) long / 5 meters (16.4 feet) tall
Weight: 5,000 kg (5.5 short tons)
Collected: Soviet-Mongolian Paleontological Expeditions (1948)
Status/Author/Year: Valid / Evgeny Maleev / 1954
Area/Locality/Formation: Ömnögovi Province, Mongolia / Nemegt Formation
Yen Sid's Comments:
"A carnivorous lineage that turned its back on blood to feast upon green leaves. It carried claws like massive iron sickles, proving that the most formidable defense can be built to maintain a peaceful, quiet life."

🦖 Infraorder Deinonychosauria

Family Dromaeosauridae

Species: Atrociraptor marshalli
Meaning: Savage robber
Diet: Carnivore (small to medium animals)
Epoch/Stage/Years: Late Cretaceous / Maastrichtian / 68.5 million years ago
Origin (Franchise): Jurassic World Dominion (2022) — Genetically modified, laser-targeted pursuit pack in Malta
Estimated Length & Height: 2 meters (6.6 feet) long / 0.8 meters (2.6 feet) tall
Weight: 15 kg (33 lbs)
Collected: Wayne Marshall (1995)
Status/Author/Year: Valid / Philip J. Currie & David Varricchio / 2004
Area/Locality/Formation: Alberta, Canada / Horseshoe Canyon Formation
Yen Sid's Comments:
"A short, deep snout housing thick, curved teeth built for a vicious bite. It was a stout, built-for-impact hunter that refused to let its quarry break away."
Species: Deinonychus antirrhopus
Meaning: Terrible claw / Counterbalanced
Diet: Carnivore (Pack hunter of Tenontosaurus)
Epoch/Stage/Years: Early Cretaceous / Aptian to Albian / 115–108 million years ago
Origin (Franchise): Jurassic Park Novel (1990) — Michael Crichton used its physical dimensions for his "Velociraptors"
Estimated Length & Height: 3.4 meters (11 feet) long / 1 meter (3.3 feet) tall at hips
Weight: 73 to 100 kg (161 to 220 lbs)
Collected: John Ostrom (1964)
Status/Author/Year: Valid / John Ostrom / 1969
Area/Locality/Formation: Montana & Wyoming, USA / Cloverly Formation
Yen Sid's Comments:
"The discovery that sparked a great scientific awakening, proving dinosaurs were warm, dynamic, and full of athletic magic. Its switchblade toe-claw changed how mankind viewed the ancient world forever."
Species: Hesperonychus elizabethae
Meaning: Western claw
Diet: Carnivore (insects, small mammals, amphibians)
Epoch/Stage/Years: Late Cretaceous / Campanian / 76.5 million years ago
Origin (Franchise): Paleo-Media — Recognized as one of the smallest known dromaeosaurs in North America
Estimated Length & Height: 1 meter (3.3 feet) long / 30 centimeters (12 inches) tall
Weight: 1.9 kg (4.2 lbs)
Collected: Elizabeth Nicholls (1982)
Status/Author/Year: Valid / Nick Longrich & Philip J. Currie / 2009
Area/Locality/Formation: Alberta, Canada / Dinosaur Park Formation
Yen Sid's Comments:
"A micro-predator that hunted the dense undergrowth of the primeval world. It shows that the raptor design was just as lethal when miniaturized down to the size of a common alley cat."
Species: Pyroraptor olympius
Meaning: Fire robber of Mount Olympus
Diet: Carnivore
Epoch/Stage/Years: Late Cretaceous / Campanian to Maastrichtian / 70.6 million years ago
Origin (Franchise): Jurassic World Dominion (2022) — Encountered on the ice, showcasing swimming abilities
Estimated Length & Height: 2.4 meters (7.9 feet) long / 0.6 meters (2 feet) tall
Weight: 30 kg (66 lbs)
Collected: Found after a forest fire (1992)
Status/Author/Year: Valid / Ronan Allain & Philippe Taquet / 2000
Area/Locality/Formation: Provence, France / La Boucharde / Argiles Rutilantes Formation
Yen Sid's Comments:
"Born from a landscape scorched by forest fire, it wore a brilliant coat of feathers. It reminds us that life can regenerate and emerge with vibrant splendor from the ashes of destruction."
Species: Saurornitholestes sullivani
Meaning: Lizard-bird thief (Sullivan's)
Diet: Carnivore (small mammals, juvenile dinosaurs)
Epoch/Stage/Years: Late Cretaceous / Campanian / 73 million years ago
Origin (Franchise): Dino Dan (2010) — Encountered as a sneaky, fast predator
Estimated Length & Height: 1.8 meters (5.9 feet) long / 0.6 meters (2 feet) tall
Weight: 10 kg (22 lbs)
Collected: Robert Sullivan (1999)
Status/Author/Year: Valid / Steven Jasinski / 2015
Area/Locality/Formation: New Mexico, USA / Kirtland Formation
Yen Sid's Comments:
"Equipped with an exceptional sense of smell, it tracked hidden game through the dark forest floor. A sharp nose can guide you through paths where light fails to reach."
Species: Utahraptor ostrommaysi
Meaning: Utah robber (Ostrom's)
Diet: Carnivore (Apex pack predator of large iguanodonts)
Epoch/Stage/Years: Early Cretaceous / Barremian / 126 million years ago
Origin (Franchise): Raptor Red by Robert T. Bakker (1995) — Written from the internal perspective of a female Utahraptor
Estimated Length & Height: 5.5 to 7 meters (18–23 feet) long / 1.8 meters (6 feet) tall at hips
Weight: 500 kg (1,100 lbs)
Collected: James Kirkland et al. (1991)
Status/Author/Year: Valid / Kirkland, Gaston, & Burge / 1993
Area/Locality/Formation: Utah, USA / Dalton Wells / Cedar Mountain Formation
Yen Sid's Comments:
"The grandest raptor of them all, built like a grizzly bear but gifted with the agility of a leaping bird. Its foot claws were massive killing hooks, a masterpiece of ancient predatory design."
Species: Velociraptor osmolskae
Meaning: Swift robber (Osmólska's)
Diet: Carnivore (small dinosaurs like Protoceratops)
Epoch/Stage/Years: Late Cretaceous / Campanian / 75–71 million years ago
Origin (Franchise): National Geographic Documentaries — Showcasing the real, feathered desert predator
Estimated Length & Height: 2 meters (6.6 feet) long / 0.5 meters (1.6 feet) tall
Weight: 15 kg (33 lbs)
Collected: Belgian-Chinese expeditions (1999)
Status/Author/Year: Valid / Pascal Godefroit et al. / 2008
Area/Locality/Formation: Inner Mongolia, China / Bayan Mandahu Formation
Yen Sid's Comments:
"A fierce spirit of the wind-swept sand dunes. While modern mythmakers expanded its size to terrify theater audiences, the real animal was a small, feathered package of sheer speed and precision."

Family Archaeopterygidae

Species: Archaeopteryx albersdoerferi
Meaning: Ancient wing / First wing
Diet: Insectivore / Carnivore (small lizards)
Epoch/Stage/Years: Late Jurassic / Tithonian / 150.8–148.5 million years ago
Origin (Franchise): Fantasia (1940) — Seen gliding over the prehistoric waters during the dawn of life sequence
Estimated Length & Height: 0.5 meters (1.6 feet) long / 25 centimeters (10 inches) tall
Weight: 0.5 to 1 kg (1.1 to 2.2 lbs)
Collected: Raimund Albersdörfer (2010)
Status/Author/Year: Valid / Martin Kundrát et al. / 2018
Area/Locality/Formation: Bavaria, Germany / Solnhofen Limestone
Yen Sid's Comments:
"The beautiful bridge between the creeping reptiles and the masters of the sky. It held teeth in its beak and claws on its wings, taking the very first tentative glides toward a grand new magical realm."

Family Alexornithidae

Species: Alexornis antecedens
Meaning: Alexander's bird / Going before
Diet: Insectivore / Omnivore
Epoch/Stage/Years: Late Cretaceous / Coniacian / 89 million years ago
Origin (Franchise): Walking with Dinosaurs 3D Film (2013) — Alex, the narrator bird character, belongs to this genus
Estimated Length & Height: 20 centimeters (8 inches) long / 10 centimeters (4 inches) tall
Weight: 100 grams (0.22 lbs)
Collected: Pierce Brodkorb (1971)
Status/Author/Year: Valid / Pierce Brodkorb / 1976
Area/Locality/Formation: Baja California, Mexico / Bocana Roja Formation
Yen Sid's Comments:
"A true early bird that watched the last dinosaurs march by. It traded the heavy, ancient scales for a life of freedom in the clouds, surviving the great end of an age by simply flying above it."

🦕 Infraorder Prosauropoda

Family Herrerasauridae

Species: Herrerasaurus ischigualastensis
Meaning: Herrera's lizard (from Ischigualasto)
Diet: Carnivore (agile hunter of early synapsids)
Epoch/Stage/Years: Late Triassic / Carnian stage / 231.4 million years ago
Origin (Franchise): Jurassic Park (1993) — Listed on the original park tour brochure; later featured in Jurassic Park: The Game
Estimated Length & Height: 6 meters (20 feet) long / 1.7 meters (5.6 feet) tall at hips
Weight: 350 kg (770 lbs)
Collected: Victorino Herrera (1959)
Status/Author/Year: Valid / Osvaldo Reig / 1963
Area/Locality/Formation: San Juan Province, Argentina / Ischigualasto Formation
Yen Sid's Comments:
"A fierce entity from the dawn of the dinosaurian age. It carries a lean, hungry magic, striking down the slow beasts of the Triassic rivers. It reminds us that every grand lineage begins with a sharp, ambitious spark."

Family Anchisauridae

Species: Anchisaurus polyzelus
Meaning: Near lizard / Much sought-for
Diet: Herbivore / Omnivore
Epoch/Stage/Years: Early Jurassic / Pliensbachian to Toarcian / 190–176 million years ago
Origin (Franchise): Classic Museum History — One of the earliest dinosaurs found in North America
Estimated Length & Height: 2 meters (6.6 feet) long / 0.6 meters (2 feet) tall
Weight: 27 kg (60 lbs)
Collected: Solomon Ellsworth Jr. (1818)
Status/Author/Year: Valid / Othniel Charles Marsh / 1885
Area/Locality/Formation: Connecticut, USA / Portland Formation
Yen Sid's Comments:
"A delicate, dual-natured creature that could stand on two feet or walk on four. It represents the quiet transition of form before nature fully committed to making these beasts into mountains."
Species: Efraasia minor
Meaning: Eberhard Fraas's lizard
Diet: Herbivore
Epoch/Stage/Years: Late Triassic / Norian / 210 million years ago
Origin (Franchise): Walking with Dinosaurs (1999) era paleo-media — Used to illustrate the rise of early plant-eaters
Estimated Length & Height: 6 meters (20 feet) long / 1.5 meters (5 feet) tall
Weight: 350 kg (770 lbs)
Collected: Albert Burrer (1909)
Status/Author/Year: Valid / Adam Yates / 2003
Area/Locality/Formation: Baden-Württemberg, Germany / Löwenstein Formation
Yen Sid's Comments:
"For nearly a century, its bones were confused with other creatures. Nature often wears a shroud of mystery, leaving humans to sort through the fragments until the true shape of the past is revealed."
Species: Smurfette smurfiness
Meaning: The blue maiden of the Smurf village
Diet: Melativore (Sarsaparilla leaves, Smurfberries)
Epoch/Stage/Years: Medieval Era / Present-day fairy tale continuity
Origin (Franchise): The Smurfs (Hanna-Barbera / Peyo) — Created by Gargamel, later redeemed by Papa Smurf
Estimated Length & Height: 3 apples tall (approximately 15–20 centimeters)
Weight: Negligible (Light as a bluebird feather)
Collected: Gargamel in his dark laboratory alchemy pot
Status/Author/Year: Fictional Pop-Culture Entity / Peyo (Pierre Culliford) / 1966
Area/Locality/Formation: The Cursed Land / Smurf Village / Smurfberry Crest
Yen Sid's Comments:
"Ah, a creation born of dark sorcery, originally molded from clay and malice by a misguided wizard to disrupt harmony. Yet, true magic resides in the heart's capacity to change. Through love and wisdom, her dark essence was washed away, proving that one's origin does not dictate their ultimate destiny."
Species: Thecodontosaurus antiquus
Meaning: Socket-tooth lizard / Ancient
Diet: Herbivore
Epoch/Stage/Years: Late Triassic / Rhaetian stage / 205–201.3 million years ago
Origin (Franchise): BBC Nature Documentaries — Highlighted as the famous "Bristol Dinosaur"
Estimated Length & Height: 2 meters (6.6 feet) long / 0.6 meters (2 feet) tall
Weight: 11 kg (24 lbs)
Collected: Quarrymen at Durdham Down (1834)
Status/Author/Year: Valid / Morris / 1843
Area/Locality/Formation: Bristol, England / Magnesian Conglomerate
Yen Sid's Comments:
"A tiny island dweller that scampered through the ancient fissures of Britain. It was small enough to hold in one’s arms, yet it carried the blueprint for the largest giants the world would ever see."

Family Plateosauridae

Species: Massospondylus kaalae
Meaning: Longer vertebra
Diet: Herbivore / Omnivore
Epoch/Stage/Years: Early Jurassic / Hettangian to Pliensbachian / 200–183 million years ago
Origin (Franchise): National Geographic Dinosaurs — Famous for discoveries of beautifully preserved fossilized nests and embryos
Estimated Length & Height: 4 to 6 meters (13–20 feet) long / 1.5 meters (5 feet) tall
Weight: 1,000 kg (1.1 short tons)
Collected: Richard Owen (1854)
Status/Author/Year: Valid / Sir Richard Owen / 1854
Area/Locality/Formation: Free State, South Africa / Elliot Formation
Yen Sid's Comments:
"They traversed the vast plains of the southern world, using small stones in their gizzards to grind up tough ferns. Nature provides subtle tools to accomplish grand tasks without the need for sharp teeth."
Species: Plateosaurus gracilis
Meaning: Broad lizard / Slender
Diet: Herbivore
Epoch/Stage/Years: Late Triassic / Norian / 214–204 million years ago
Origin (Franchise): Walking with Dinosaurs (1999) — Depicted migrating across the vast, arid deserts of the Triassic
Estimated Length & Height: 4.8 to 5 meters (16 feet) long / 1.5 meters (5 feet) tall
Weight: 600 kg (1,320 lbs)
Collected: Johann Friedrich Engelhardt (1834)
Status/Author/Year: Valid / von Meyer / 1837
Area/Locality/Formation: Central Europe / Trossingen Formation
Yen Sid's Comments:
"A mighty herd animal that reared up on its hind legs to reach the high branches of ancient conifers. It represents the true dawn of the great plant-eating empires."

Family Melanorosauridae

Species: Riojasaurus incertus
Meaning: La Rioja lizard / Uncertain
Diet: Herbivore
Epoch/Stage/Years: Late Triassic / Norian / 221–210 million years ago
Origin (Franchise): When Dinosaurs Roamed America (2001) — Explored as a heavy Triassic herbivore
Estimated Length & Height: 10 meters (33 feet) long / 3 meters (10 feet) tall
Weight: 2,700 kg (3 short tons)
Collected: José Bonaparte (1960s)
Status/Author/Year: Valid / José Bonaparte / 1969
Area/Locality/Formation: La Rioja Province, Argentina / Los Colorados Formation
Yen Sid's Comments:
"A heavy, dense quadruped that completely abandoned the bipedal stance of its cousins. It chose to anchor itself firmly to the earth, a precursor to the true giants of the deep Jurassic."

🦕 Infraorder Sauropoda

Family Cetiosauridae

Species: Barapasaurus tagorei
Meaning: Big-legged lizard (named after Rabindranath Tagore)
Diet: Herbivore
Epoch/Stage/Years: Early Jurassic / Toarcian to Aalenian / 178–174 million years ago
Origin (Franchise): Primal (Genndy Tartakovsky, 2019) style paleo-media — Representing early, massive Jurassic sauropods
Estimated Length & Height: 14 meters (46 feet) long / 4 meters (13 feet) tall
Weight: 7,000 kg (7.7 short tons)
Collected: Joint team from Indian Statistical Institute (1960)
Status/Author/Year: Valid / Jain, Robinson, & Roy-Chowdhury / 1975
Area/Locality/Formation: Telangana, India / Kota Formation
Yen Sid's Comments:
"Named in honor of a great human poet, this beast was a poetry of bone and mass. It walked on pillars of solid bone, an early master of the rising Jurassic floodplains."

Family Brachiosauridae

Species: Brachiosaurus altithorax
Meaning: Arm lizard / Deep chest
Diet: Herbivore (High-canopy browser)
Epoch/Stage/Years: Late Jurassic / Kimmeridgian to Tithonian / 154–150 million years ago
Origin (Franchise): Jurassic Park (1993) — The breathtaking first dinosaur seen by Alan Grant and Ellie Sattler
Estimated Length & Height: 27 meters (88 feet) long / 16.5 meters (52 feet) tall
Weight: 28,300 to 46,900 kg (31 to 52 short tons)
Collected: Elmer S. Riggs (1900)
Status/Author/Year: Valid / Elmer S. Riggs / 1903
Area/Locality/Formation: Colorado, USA; Telangana, India / Grand Junction / Morrison; Kota Formation
Yen Sid's Comments:
"A truly majestic tower of life. When it rears up to drink the sunlight from the highest trees, it commands a quiet reverence. It proves that nature can elevate life to reach the heavens without wings."
Species: Supersaurus vivianae
Meaning: Super lizard (Vivian's)
Diet: Herbivore
Epoch/Stage/Years: Late Jurassic / Tithonian / 153–148 million years ago
Origin (Franchise): Walking with Dinosaurs: Allosaurus Special (2000) — Portrayed as an untouchable colossus
Estimated Length & Height: 39 to 45 meters (128–150 feet) long / 21 meters (69 feet) tall at head
Weight: 32,000 to 36,000 kg (35 to 60 short tons)
Collected: Vivian Jones (1972)
Status/Author/Year: Valid / James A. Jensen / 1985
Area/Locality/Formation: Colorado, USA / Dry Mesa Quarry / Morrison Formation
Yen Sid's Comments:
"A creature stretched across the landscape like a living suspension bridge. Its whip-like tail could break the sound barrier with a crack like thunder, keeping predators far out in the shadows."

Family Camarasauridae

Species: Camarasaurus supremus
Meaning: Chambered lizard / Highest
Diet: Herbivore (tough flora, cycads)
Epoch/Stage/Years: Late Jurassic / Kimmeridgian to Tithonian / 155–145 million years ago
Origin (Franchise): Fantasia (1940) — Seen wading through deep swamps during the primeval storm
Estimated Length & Height: 23 meters (75 feet) long / 9 meters (29 feet) tall
Weight: 47,000 kg (51.8 short tons)
Collected: Oramel William Lucas (1877)
Status/Author/Year: Valid / Edward Drinker Cope / 1877
Area/Locality/Formation: Colorado, USA / Garden Park / Morrison Formation
Yen Sid's Comments:
"Its skull was full of hollow spaces, light yet strong, built to support an relentless jaw. It stood its ground against the greatest tyrants of its age through sheer, unyielding density."
Species: Euhelopus zdanskyi
Meaning: True marsh-foot (Zdansky's)
Diet: Herbivore
Epoch/Stage/Years: Early Cretaceous / Barremian to Aptian / 129–113 million years ago
Origin (Franchise): Classic Asian Expedition History — The first dinosaur from China to receive a scientific name
Estimated Length & Height: 15 meters (49 feet) long / 4.5 meters (15 feet) tall
Weight: 15,000 to 20,000 kg (16.5 to 22 short tons)
Collected: Otto Zdansky (1923)
Status/Author/Year: Valid / Carl Wiman / 1929
Area/Locality/Formation: Shandong Province, China / Mengyin Formation
Yen Sid's Comments:
"A creature with front legs longer than its rears, holding its head high like a giraffe over the ancient Chinese wetlands. It moved with a slow, deliberate dignity across the shifting marshes."
Species: Opisthocoelicaudia skarzynskii
Meaning: Rear-cavity tail
Diet: Herbivore
Epoch/Stage/Years: Late Cretaceous / Maastrichtian / 70 million years ago
Origin (Franchise): Dinosaur Revolution (2011) — Featured as a stocky, heavy-tailed defensive herbivore
Estimated Length & Height: 11.4 meters (37 feet) long / 3.5 meters (11.5 feet) tall
Weight: 8,400 to 10,000 kg (9.3 to 11 short tons)
Collected: Polish-Mongolian Palaeontological Expeditions (1965)
Status/Author/Year: Valid / Maria Magdalena Borsuk-Białynicka / 1977
Area/Locality/Formation: Ömnögovi, Mongolia / Nemegt Formation
Yen Sid's Comments:
"Its unique tail bones allowed it to trip-pod itself, lifting its front legs off the ground to reach hidden greens. Where others saw limitations, this clever beast found leverage."

Family Diplodocidae

Species: Apatosaurus ajax
Meaning: Deceptive lizard / Ajax
Diet: Herbivore
Epoch/Stage/Years: Late Jurassic / Kimmeridgian to Tithonian / 152–151 million years ago
Origin (Franchise): Disney's Pixar: The Good Dinosaur (2015) — Arlo, the protagonist, is an Apatosaurus
Estimated Length & Height: 21 to 25 meters (69–82 feet) long / 7.5 meters (23 feet) tall at hips
Weight: 16,400 to 32,400 kg (18 to 34.7 short tons)
Collected: Arthur Lakes (1877)
Status/Author/Year: Valid / Othniel Charles Marsh / 1877
Area/Locality/Formation: Colorado, USA / Gunnison County / Morrison Formation
Yen Sid's Comments:
"A titan so immense that early scholars confused its bones with those of whales. Deception was its namesake, yet its presence was an undeniable truth that shook the very foundations of the earth."
Species: Diplodocus hallorum
Meaning: Double beam (Seismosaurus)
Diet: Herbivore (low-to-mid canopy stripper)
Epoch/Stage/Years: Late Jurassic / Kimmeridgian to Tithonian / 154–152 million years ago
Origin (Franchise): Walking with Dinosaurs (1999) — Starred in "Time of the Titans" following a female from egg to maturity
Estimated Length & Height: 32 to 35 meters (105–115 feet) long / 5.7 meters (19 feet) tall at hips
Weight: 23,000 to 30,000 kg (25 to 33 short tons)
Collected: Arthur Lakes & William Harlow Reed (1877)
Status/Author/Year: Valid / Othniel Charles Marsh / 1878
Area/Locality/Formation: Wyoming & New Mexico, USA / Morrison Formation
Yen Sid's Comments:
"A living horizon that moved in great, slow caravans across the plains. Its double-beamed tail was a whip of unmatched speed, cracking through the air like lightning to ward off predators."
Species: Mamenchisaurus sinocanadorum
Meaning: Mamenchi lizard (Sino-Canadian)
Diet: Herbivore
Epoch/Stage/Years: Late Jurassic / Oxfordian / 160–158 million years ago
Origin (Franchise): The Lost World: Jurassic Park (1997) — Seen during the motorcycle chase scene where a hunter rides between its legs
Estimated Length & Height: 26 to 35 meters (85–115 feet) long / 20 meters (66 feet) tall (head/neck upright)
Weight: 25,000 to 60,000 kg (27 to 66 short tons)
Collected: Sino-Canadian Expeditions (1987)
Status/Author/Year: Valid / Russell & Zheng / 1993
Area/Locality/Formation: Xinjiang, China / Shishugou Formation
Yen Sid's Comments:
"A creature whose neck made up half of its entire length—nineteen massive vertebrae working in unison. A supreme testament to nature's daring architectural wizardry."

Family Titanosauridae

Species: Dreadnoughtus schrani
Meaning: Fearing nothing (Schran's)
Diet: Herbivore
Epoch/Stage/Years: Late Cretaceous / Campanian to Maastrichtian / 77–70 million years ago
Origin (Franchise): Jurassic World Dominion (2022) — Seen bathing in the misty lakes of the Biosyn Sanctuary
Estimated Length & Height: 26 meters (85 feet) long / 6 meters (20 feet) tall at hips
Weight: 38,200 to 49,000 kg (42 to 54 short tons)
Collected: Kenneth Lacovara (2005)
Status/Author/Year: Valid / Kenneth Lacovara et al. / 2014
Area/Locality/Formation: Santa Cruz Province, Argentina / Cerro Fortaleza Formation
Yen Sid's Comments:
"To fear absolutely nothing—what a grand, terrifying concept. When you reach such a staggering scale, the entire world bows out of your path, and your everyday step becomes an earthquake."
Species: Patagotitan mayorum
Meaning: Patagonian titan (Mayo family's)
Diet: Herbivore
Epoch/Stage/Years: Late Cretaceous / Albian stage / 101.6 million years ago
Origin (Franchise): Prehistoric Planet (2022) — Showcased in monumental clashes between rival bulls on the dry riverbeds
Estimated Length & Height: 37 meters (121 feet) long / 6 meters (20 feet) tall at hips
Weight: 57,000 to 69,000 kg (63 to 76 short tons)
Collected: Aurelio Meza (2012)
Status/Author/Year: Valid / José Carballido et al. / 2017
Area/Locality/Formation: Chubut Province, Argentina / Cerro Barcino Formation
Yen Sid's Comments:
"The absolute apex of land-dwelling mass. It challenged the very laws of gravity, carrying the weight of a whole fleet of ships upon four legs. A true miracle of biological alchemy."
Species: Saltasaurus loricatus
Meaning: Lizard from Salta / Armored
Diet: Herbivore
Epoch/Stage/Years: Late Cretaceous / Campanian to Maastrichtian / 70–66 million years ago
Origin (Franchise): Dinosaur Planet (2003) — Featured in "Alpha's Egg," following a female Saltasaurus
Estimated Length & Height: 8.5 meters (28 feet) long / 2.2 meters (7.2 feet) tall at hips
Weight: 2,500 to 3,500 kg (2.8 to 3.8 short tons)
Collected: José Bonaparte et al. (1975)
Status/Author/Year: Valid / José Bonaparte & Jaime Powell / 1980
Area/Locality/Formation: Salta Province, Argentina / Lecho Formation
Yen Sid's Comments:
"A sauropod that traded immense size for a coat of bony armor plating. It proves that when the world becomes crowded with swift predators, adapting your defenses is far wiser than trying to outgrow them."

🦕 Infraorder Ornithopoda

Family Fabrosauridae

Species: Lesothosaurus diagnosticus
Meaning: Lizard from Lesotho
Diet: Herbivore / Omnivore
Epoch/Stage/Years: Early Jurassic / Hettangian to Sinemurian / 201.3–199.3 million years ago
Origin (Franchise): Jurassic Park III (2001) — Name visible on the InGen laboratory specimen tanks
Estimated Length & Height: 2 meters (6.6 feet) long / 0.6 meters (2 feet) tall
Weight: 6 kg (13 lbs)
Collected: Peter Throckmorton (1963)
Status/Author/Year: Valid / Paul Sereno / 1978
Area/Locality/Formation: Mafeteng District, Lesotho / Upper Elliot Formation
Yen Sid's Comments:
"A lightweight runner from the dawn of the Jurassic. It relied entirely on agile feet and sharp senses to slip away from early carnivores, showing that sometimes the best defense against a dark force is simply being too swift to catch."
Species: Scutellosaurus lawleri
Meaning: Little-shielded lizard
Diet: Herbivore
Epoch/Stage/Years: Early Jurassic / Hettangian to Sinemurian / 196 million years ago
Origin (Franchise): When Dinosaurs Roamed America (2001) — Shown navigating the brush alongside early theropods
Estimated Length & Height: 1.2 meters (4 feet) long / 0.4 meters (1.3 feet) tall
Weight: 3 kg (6.6 lbs)
Collected: Douglas Lawler (1977)
Status/Author/Year: Valid / Edwin Harris Colbert / 1981
Area/Locality/Formation: Arizona, USA / Kayenta Formation
Yen Sid's Comments:
"Its back was studded with hundreds of tiny, bony buttons. This modest, early armor was a quiet prophecy, the very first seed of a design that would one day culminate in the heavy plate-mail of the great Stegosaurs."

Family Heterodontosauridae

Species: Echinodon becklesii
Meaning: Prickly tooth
Diet: Omnivore
Epoch/Stage/Years: Early Cretaceous / Berriasian / 140 million years ago
Origin (Franchise): Classic British Paleontology — Recognized historically as one of the smallest known Mesozoic reptiles
Estimated Length & Height: 60 centimeters (2 feet) long / 20 centimeters (8 inches) tall
Weight: 0.5 kg (1.1 lbs)
Collected: Samuel Husband Beckles (1850s)
Status/Author/Year: Valid / Sir Richard Owen / 1861
Area/Locality/Formation: Swanage, England / Purbeck Limestone Group
Yen Sid's Comments:
"A tiny creature with jaw spikes like a hedgehog. It survived into the Cretaceous long after its closest kin had vanished, a stubborn survivor refusing to leave the grand tapestry of life."
Species: Heterodontosaurus tucki
Meaning: Different-toothed lizard
Diet: Omnivore (tough plants, small vertebrates)
Epoch/Stage/Years: Early Jurassic / Hettangian to Sinemurian / 200–190 million years ago
Origin (Franchise): National Geographic Dinosaurs — Famed for its specialized mammal-like canine tusks
Estimated Length & Height: 1.18 meters (3.9 feet) long / 35 centimeters (14 inches) tall
Weight: 1.8 to 3.4 kg (4 to 7.5 lbs)
Collected: G. C. Tuck (1961)
Status/Author/Year: Valid / Alan Charig & Alfred Crompton / 1962
Area/Locality/Formation: Cape Province, South Africa / Upper Elliot Formation
Yen Sid's Comments:
"Most reptiles share teeth of a singular mold, but this little eccentric bore clipping incisors, grinding molars, and prominent fangs. Nature loves to experiment with its instruments before settling on a final symphony."

Family Hypsilophodontidae

Species: Dryosaurus elderae
Meaning: Oak lizard
Diet: Herbivore
Epoch/Stage/Years: Late Jurassic / Kimmeridgian / 155–150 million years ago
Origin (Franchise): Jurassic Park: Operation Genesis (2003) — Standard low-maintenance herd animal for park exhibits
Estimated Length & Height: 3 meters (10 feet) long / 1.2 meters (4 feet) tall
Weight: 70 to 90 kg (150 to 200 lbs)
Collected: Morrison Crew (1970s)
Status/Author/Year: Valid / Kenneth Carpenter & Peter Galton / 2018
Area/Locality/Formation: Utah, USA / Dinosaur National Monument / Morrison Formation
Yen Sid's Comments:
"With a beak shaped like an acorn and large, liquid eyes, it lived in the shadows of the great long-necks. It reminds us that gentleness and vigilance have their own enduring magic in a world of giants."
Species: Hypsilophodon foxii
Meaning: High-crested tooth
Diet: Herbivore
Epoch/Stage/Years: Early Cretaceous / Barremian / 130–125 million years ago
Origin (Franchise): Michael Crichton's Jurassic Park Novel (1990) — Mentioned as a tree-climbing park dinosaur due to early museum misconceptions
Estimated Length & Height: 1.8 meters (5.9 feet) long / 0.6 meters (2 feet) tall
Weight: 20 kg (44 lbs)
Collected: William Fox (1849)
Status/Author/Year: Valid / Thomas Henry Huxley / 1869
Area/Locality/Formation: Isle of Wight, England / Wessex Formation
Yen Sid's Comments:
"Early human scholars erroneously believed this agile creature lived up in tree branches like a modern kangaroo. A sobering reminder that even the most meticulous observations can twist into beautiful illusions when looking at fragments of the past."
Species: Parksosaurus warreni
Meaning: William Parks's lizard
Diet: Herbivore
Epoch/Stage/Years: Late Cretaceous / Maastrichtian / 70 million years ago
Origin (Franchise): Canadian Paleoart Exhibits — Illustrating the fast-running undergrowth grazers of the North
Estimated Length & Height: 2.5 meters (8.2 feet) long / 1 meter (3.3 feet) tall
Weight: 45 kg (100 lbs)
Collected: University of Toronto Expedition (1922)
Status/Author/Year: Valid / William Parks / 1926 (Reclassified by Charles M. Sternberg, 1937)
Area/Locality/Formation: Alberta, Canada / Horseshoe Canyon Formation
Yen Sid's Comments:
"A sturdy, stocky runner built to withstand the crisp northern climates. It carried no weapons, finding its sanctuary in the thickest brush where large predators could not comfortably squeeze."
Species: Tenontosaurus dossi
Meaning: Sinew lizard
Diet: Herbivore
Epoch/Stage/Years: Early Cretaceous / Aptian to Albian / 115 million years ago
Origin (Franchise): Primal Carnage (2012) world lore — Representing the large, long-tailed prey of dromaeosaur packs
Estimated Length & Height: 6.5 meters (21.3 feet) long / 2 meters (6.5 feet) tall
Weight: 1,000 kg (1.1 short tons)
Collected: James Doss (1980s)
Status/Author/Year: Valid / Louis Jacobs et al. / 1993
Area/Locality/Formation: Texas, USA / Twin Mountains Formation
Yen Sid's Comments:
"Its immensely long, stiffened tail acted as a balancing staff. It was a peaceful grazer destined to be intertwined in history with predatory raptors, showing that nature's ledger demands balance between the gatherer and the hunter."
Species: Thescelosaurus garbanii
Meaning: Wonderful lizard
Diet: Herbivore / Omnivore
Epoch/Stage/Years: Late Cretaceous / Maastrichtian / 68–66 million years ago
Origin (Franchise): Dinosaur Revolution (2011) — Portrayed as a surprisingly stubborn, aggressive burrower/grazer
Estimated Length & Height: 4 meters (13 feet) long / 1.2 meters (4 feet) tall
Weight: 300 kg (660 lbs)
Collected: Harley Garbani (1968)
Status/Author/Year: Valid / Morris / 1976
Area/Locality/Formation: Montana, USA / Hell Creek Formation
Yen Sid's Comments:
"A strange, heavy-set runner that walked alongside the final tyrant kings. Some specimens suggest it possessed a hardened, four-chambered heart—a hidden spark of complex magic pulsing beneath its modest exterior."

Family Iguanodontidae

Species: Camptosaurus dispar
Meaning: Flexible lizard
Diet: Herbivore
Epoch/Stage/Years: Late Jurassic / Kimmeridgian to Tithonian / 156–146.8 million years ago
Origin (Franchise): Walking with Dinosaurs: Allosaurus Special (2000) — Depicted sharing a symbiotic warning relationship with Stegosaurus
Estimated Length & Height: 6 meters (20 feet) long / 2 meters (6.5 feet) tall
Weight: 800 kg (1,760 lbs)
Collected: Arthur Lakes (1879)
Status/Author/Year: Valid / Othniel Charles Marsh / 1879
Area/Locality/Formation: Wyoming, USA / Como Bluff / Morrison Formation
Yen Sid's Comments:
"A transitional traveler with versatile wrists that allowed it to stroll on four legs or rise onto two. It lived among armored titans, using its clever shifting stance to browse low shrubs or high branches at will."
Species: Iguanodon bernissartensis
Meaning: Iguana tooth (from Bernissart)
Diet: Herbivore (bulk foliage)
Epoch/Stage/Years: Early Cretaceous / Barremian to Aptian / 126–122 million years ago
Origin (Franchise): Disney's Dinosaur (2000) — Aladar, the film's main protagonist, is an Iguanodon
Estimated Length & Height: 10 to 13 meters (33–43 feet) long / 4 meters (13 feet) tall
Weight: 3,000 to 5,000 kg (3.3 to 5.5 short tons)
Collected: Coal miners in Bernissart (1878)
Status/Author/Year: Valid / George Albert Boulenger / 1881
Area/Locality/Formation: Hainaut, Belgium / Bernissart Coal Mine / Sainte-Barbe Clays Formation
Yen Sid's Comments:
"The grand vanguard of dinosaurian discovery. Early naturalists mistakenly placed its sharp thumb spike upon its nose like a horn—a poetic error. In our animated chronicles, it stood as a symbol of endurance, leading its herd through desolation to find paradise."
Species: Muttaburrasaurus langdoni
Meaning: Muttaburra lizard
Diet: Herbivore / Omnivore (specialized jaw mechanics)
Epoch/Stage/Years: Early Cretaceous / Albian / 105–103 million years ago
Origin (Franchise): Walking with Dinosaurs (1999) — Starred in "Spirits of the Ice Forest" migrating through polar woods
Estimated Length & Height: 8 meters (26 feet) long / 2.5 meters (8.2 feet) tall
Weight: 2,800 kg (3 short tons)
Collected: Doug Langdon (1963)
Status/Author/Year: Valid / Alan Bartholomai & Ralph Molnar / 1981
Area/Locality/Formation: Queensland, Australia / Mackunda Formation
Yen Sid's Comments:
"It bore an inflated, hollow snout like a great crystal ball or a trumpet. Through this bony chamber, it could broadcast booming calls across the frozen southern forests, signaling its kin through the winter mist."
Species: Ouranosaurus nigeriensis
Meaning: Brave lizard (from Niger)
Diet: Herbivore
Epoch/Stage/Years: Early Cretaceous / Aptian / 125–112 million years ago
Origin (Franchise): Jurassic World: Camp Cretaceous (2020) — Featured as a territorial, aggressive sail-backed herbivore
Estimated Length & Height: 7 to 8.3 meters (23–27 feet) long / 2.5 meters (8.2 feet) tall
Weight: 2,200 kg (2.4 short tons)
Collected: Philippe Taquet (1965)
Status/Author/Year: Valid / Philippe Taquet / 1976
Area/Locality/Formation: Agadez, Niger / Elrhaz Formation
Yen Sid's Comments:
"A majestic vision with a tall sail along its spine, drinking the heat of the African sun. It combined the face of a duck-bill with the proud banner of a mythical beast, grazing peacefully beside ancient river dragons."

Family Hadrosauridae

Species: Corythosaurus casuarius
Meaning: Helmet lizard (like a cassowary)
Diet: Herbivore
Epoch/Stage/Years: Late Cretaceous / Campanian / 77–75.7 million years ago
Origin (Franchise): Jurassic Park III (2001) — Seen stampeding in a mixed flock with Parasaurolophus
Estimated Length & Height: 9 meters (30 feet) long / 2.8 meters (9.2 feet) tall at hips
Weight: 3,020 to 4,000 kg (3.3 to 4.4 short tons)
Collected: Barnum Brown (1911)
Status/Author/Year: Valid / Barnum Brown / 1914
Area/Locality/Formation: Alberta, Canada; Wyoming, USA / Dinosaur Park; Lance Formation
Yen Sid's Comments:
"Its skull was crowned with a spectacular bony helmet, hollowed out to act as a resonant musical chamber. When the great herds gathered, the valleys would echo with their deep, haunting horn-calls."
Species: Edmontosaurus regalis
Meaning: Edmonton lizard (Regal)
Diet: Herbivore (conifers, twigs, berries)
Epoch/Stage/Years: Late Cretaceous / Maastrichtian / 73–66 million years ago
Origin (Franchise): Prehistoric Planet (2022) — Shown migrating across icy arctic terrains and outsmarting mountain predators
Estimated Length & Height: 12 to 13 meters (39–43 feet) long / 3.5 meters (11.5 feet) tall at hips
Weight: 4,000 to 9,000 kg (4.4 to 9.9 short tons)
Collected: Lawrence Lambe (1912)
Status/Author/Year: Valid / Lawrence Lambe / 1917
Area/Locality/Formation: Alberta, Canada; Wyoming, USA / Horseshoe Canyon; Lance Formation
Yen Sid's Comments:
"A giant among the duck-billed nations, recent discoveries show it bore a soft, fleshy comb upon its head like a rooster. Nature often hides its finest decorations in soft tissue, away from the preservation of bone."
Species: Lambeosaurus magnicristatus
Meaning: Lawrence Lambe's lizard (Large-crested)
Diet: Herbivore
Epoch/Stage/Years: Late Cretaceous / Campanian / 75.5 million years ago
Origin (Franchise): Classic Museum Infographics — Exhibiting the extreme diversity of late Cretaceous crest variations
Estimated Length & Height: 9.1 meters (30 feet) long / 3 meters (10 feet) tall at hips
Weight: 3,600 kg (4 short tons)
Collected: Charles M. Sternberg (1919)
Status/Author/Year: Valid / C. M. Sternberg / 1935
Area/Locality/Formation: Alberta, Canada / Dinosaur Park Formation
Yen Sid's Comments:
"It bore a crest shaped like a great ornamental axe or a stylized hatchet. In the ancient glades, these structures were vibrant banners, signaling identity and status across the crowded plains."
Species: Maiasaura peeblesorum
Meaning: Good mother lizard
Diet: Herbivore
Epoch/Stage/Years: Late Cretaceous / Campanian / 76.7 million years ago
Origin (Franchise): Jurassic Park Novel (1990) — Seen grazing peacefully along the riverbanks during the raft tour
Estimated Length & Height: 9 meters (30 feet) long / 2.5 meters (8.2 feet) tall at hips
Weight: 4,000 kg (4.4 short tons)
Collected: Jack Horner & Robert Makela (1978)
Status/Author/Year: Valid / Jack Horner & Robert Makela / 1979
Area/Locality/Formation: Montana, USA / Egg Mountain / Two Medicine Formation
Yen Sid's Comments:
"Found resting by the thousands in massive communal nesting grounds. This 'good mother' nurtured its unhatched young with profound devotion, proving that compassion and family structure are as old as the earth itself."
Species: Parasaurolophus walkeri
Meaning: Near crested lizard (Walker's)
Diet: Herbivore
Epoch/Stage/Years: Late Cretaceous / Campanian / 76.5–74.5 million years ago
Origin (Franchise): Disney's Fantasia (1940) — Seen wading in the background of the pre-extinction marsh scenes
Estimated Length & Height: 9.5 meters (31 feet) long / 2.8 meters (9.2 feet) tall at hips
Weight: 2,500 to 3,500 kg (2.7 to 3.8 short tons)
Collected: Levi Sternberg (1920)
Status/Author/Year: Valid / William Parks / 1922
Area/Locality/Formation: Alberta, Canada / Dinosaur Park Formation
Yen Sid's Comments:
"A truly marvelous instrumentalist. Its long, backward-curving tube was a grand trumpet, built to play low-frequency chords that could travel through miles of thick primeval fog. A natural sorcery of sound."
Species: Saurolophus osborni
Meaning: Lizard crest (Osborn's)
Diet: Herbivore
Epoch/Stage/Years: Late Cretaceous / Maastrichtian / 70–68 million years ago
Origin (Franchise): The Land Before Time (1988) — Inspiring the character design of Ducky, the cheerful "Bigmouth"
Estimated Length & Height: 8.5 to 9.8 meters (28–32 feet) long / 3 meters (10 feet) tall
Weight: 3,000 kg (3.3 short tons)
Collected: Barnum Brown (1911)
Status/Author/Year: Valid / Barnum Brown / 1912
Area/Locality/Formation: Alberta, Canada / Horseshoe Canyon Formation
Yen Sid's Comments:
"It bore a solid, spike-like ridge rising directly between its eyes, which may have anchored an inflatable sac of skin. It could signal its emotions through bursts of color or movement, a natural storyteller of its herd."
Species: Shantungosaurus giganteus
Meaning: Shandong lizard (Gigantic)
Diet: Herbivore
Epoch/Stage/Years: Late Cretaceous / Campanian / 73 million years ago
Origin (Franchise): Primal Carnage: Extinction (2015) world database — The largest non-sauropod dinosaur capable of crushing theropods
Estimated Length & Height: 15 to 16.6 meters (49–54 feet) long / 5 meters (16.4 feet) tall at hips
Weight: 13,000 to 16,000 kg (14.3 to 17.6 short tons)
Collected: Geological Survey of China team (1964)
Status/Author/Year: Valid / Hu Chengzhi / 1973
Area/Locality/Formation: Shandong, China / Wangshi Group
Yen Sid's Comments:
"A colossal monument of an ornithopod. It grew so massive that it rivaled the great long-necks in stature, proving that a diet of simple, green leaves can build a titan if given enough generations of peace."
Species: Tsintaosaurus spinorhinus
Meaning: Qingdao lizard / Thorn-nosed
Diet: Herbivore
Epoch/Stage/Years: Late Cretaceous / Campanian to Maastrichtian / 73 million years ago
Origin (Franchise): Dinosaur Train (2009) — Visited as a crest-displaying resident of the late Cretaceous station
Estimated Length & Height: 8.3 meters (27 feet) long / 2.8 meters (9.2 feet) tall
Weight: 3,000 kg (3.3 short tons)
Collected: C. C. Young (1950)
Status/Author/Year: Valid / C. C. Young / 1958
Area/Locality/Formation: Shandong, China / Jiangjunding Formation
Yen Sid's Comments:
"For a long time, men believed it bore a single vertical spike like a unicorn’s horn. While later discoveries revealed the structure was part of a larger, forward-hollowed crest, the illusion of the unicorn remains a beautiful testament to human imagination."

🦖 Infraorder Ceratopia

Family Pachycephalosauridae

Species: Dracorex hogwartsia (Note: Widely considered a juvenile growth stage of Pachycephalosaurus)
Meaning: Dragon king of Hogwarts
Diet: Herbivore / Omnivore
Epoch/Stage/Years: Late Cretaceous / Maastrichtian / 68–66 million years ago
Origin (Franchise): Named directly after J.K. Rowling's Harry Potter Universe; featured in Jurassic World: Evolution
Estimated Length & Height: 3 meters (10 feet) long / 1.2 meters (4 feet) tall
Weight: 45 kg (100 lbs)
Collected: Three amateur paleontologists (2004)
Status/Author/Year: Synonym / Robert T. Bakker et al. / 2006
Area/Locality/Formation: South Dakota, USA / Hell Creek Formation
Yen Sid's Comments:
"With a skull covered in spikes, nodes, and a long flat snout, it looked entirely like a dragon born of sorcery. It is beautifully ironic that a creature named after a school of magic helped scientists unmask the illusions of dinosaur growth stages."
Species: Homalocephale calathocercos
Meaning: Even head / Basket tail
Diet: Herbivore
Epoch/Stage/Years: Late Cretaceous / Campanian / 75–70 million years ago
Origin (Franchise): Jurassic Park: Operation Genesis (2003) — Featured as a small, highly popular, flat-headed star attraction
Estimated Length & Height: 1.8 meters (5.9 feet) long / 0.6 meters (2 feet) tall
Weight: 43 kg (95 lbs)
Collected: Polish-Mongolian Palaeontological Expeditions (1971)
Status/Author/Year: Valid / Halszka Osmólska & Teresa Maryańska / 1974
Area/Locality/Formation: Ömnögovi Province, Mongolia / Nemegt Formation
Yen Sid's Comments:
"Unlike its dome-headed brothers, its skull was flat as a tabletop, fringed with tiny bony beads. Its exceptionally wide hips suggest it may have given birth to live young or harbored complex organs, a secret hidden within its modest frame."
Species: Pachycephalosaurus wyomingensis
Meaning: Thick-headed lizard from Wyoming
Diet: Herbivore / Omnivore
Epoch/Stage/Years: Late Cretaceous / Maastrichtian / 68–66 million years ago
Origin (Franchise): The Lost World: Jurassic Park (1997) — Nicknamed the "Friar Tuck" dinosaur that smashed open hunter vehicles
Estimated Length & Height: 4.5 meters (14.8 feet) long / 1.5 meters (5 feet) tall
Weight: 450 kg (1,000 lbs)
Collected: Ferdinand Vandeveer Hayden (1859)
Status/Author/Year: Valid / Charles W. Gilmore / 1931
Area/Locality/Formation: Wyoming & Montana, USA / Hell Creek Formation
Yen Sid's Comments:
"It carried a solid dome of bone nine inches thick upon its brow. Whether it used this massive mallet to joust with rivals or simply to display its maturity, it remains the undisputed master of blunt resolve."
Species: Prenocephale prenes
Meaning: Sloping head
Diet: Herbivore / Omnivore
Epoch/Stage/Years: Late Cretaceous / Maastrichtian / 70 million years ago
Origin (Franchise): Dinosaur Planet (2003) — Featured in "White Tip's Journey" navigating the arid Mongolian environments
Estimated Length & Height: 2.4 meters (7.9 feet) long / 0.8 meters (2.6 feet) tall
Weight: 130 kg (285 lbs)
Collected: Polish-Mongolian Palaeontological Expeditions (1970)
Status/Author/Year: Valid / Teresa Maryańska & Halszka Osmólska / 1974
Area/Locality/Formation: Ömnögovi, Mongolia / Nemegt Formation
Yen Sid's Comments:
"A round, high-domed runner adorned with row upon row of small, bony pearls along its crown. It possessed sharp downward vision, allowing it to navigate rough terrain with effortless poise."
Species: Stygimoloch spinifer (Note: Widely considered a sub-adult growth stage of Pachycephalosaurus)
Meaning: Thorny demon of the River Styx
Diet: Herbivore
Epoch/Stage/Years: Late Cretaceous / Maastrichtian / 68–66 million years ago
Origin (Franchise): Jurassic World: Fallen Kingdom (2018) — Nicknamed "Stiggy," who famously broke Owen Grady out of a prison cell
Estimated Length & Height: 3 meters (10 feet) long / 1.2 meters (4 feet) tall
Weight: 77 kg (170 lbs)
Collected: Peter Galton & Hans-Dieter Sues (1983)
Status/Author/Year: Synonym / Galton & Sues / 1983
Area/Locality/Formation: Montana, USA / Hell Creek Formation
Yen Sid's Comments:
"Named after the underworld river, it bore a crown of elongated horns at the back of its skull. In our modern stories, its headstrong, impetuous nature serves as an reminder that even a small, stubborn force can shatter iron bars if directed correctly."

Family Psittacosauridae

Species: Psittacosaurus meileyingensis
Meaning: Parrot lizard (from Meileyingzi)
Diet: Herbivore (fibrous vegetation, nuts)
Epoch/Stage/Years: Early Cretaceous / Aptian / 125–121 million years ago
Origin (Franchise): Paleo-Art History — Famed for exceptionally well-preserved specimens showing skin, quills, and camouflage patterns
Estimated Length & Height: 1 meter (3.3 feet) long / 40 centimeters (16 inches) tall
Weight: 20 kg (44 lbs)
Collected: Sino-Soviet Expeditions (1950s)
Status/Author/Year: Valid / Paul Sereno et al. / 1988
Area/Locality/Formation: Liaoning Province, China / Jiufotang Formation
Yen Sid's Comments:
"A small, bipedal ancestor with a face like a parrot and a brush of bristling quills upon its tail. It shows that the grand lineage of the horned kings began with simple, eccentric foragers cracking nuts in the forest shade."

Family Protoceratopidae

Species: Bagaceratops rozhdestvenskyi
Meaning: Small horned face
Diet: Herbivore
Epoch/Stage/Years: Late Cretaceous / Campanian / 75–72 million years ago
Origin (Franchise): Dino Dan (2010) — Envisioned as a small, cautious desert herbivore
Estimated Length & Height: 1 meter (3.3 feet) long / 30 centimeters (12 inches) tall
Weight: 22 kg (48 lbs)
Collected: Polish-Mongolian Palaeontological Expeditions (1969)
Status/Author/Year: Valid / Teresa Maryańska & Halszka Osmólska / 1975
Area/Locality/Formation: Ömnögovi, Mongolia / Barun Goyot Formation
Yen Sid's Comments:
"A miniature master of economy. It lacked the grand horns of its descendants, sporting only a modest ridge upon its snout. It lived comfortably in the shifting sands by keeping its needs minimal."
Species: Leptoceratops gracilis
Meaning: Slender horned face
Diet: Herbivore
Epoch/Stage/Years: Late Cretaceous / Maastrichtian / 66.8–66 million years ago
Origin (Franchise): Walking with Dinosaurs: Death of a Dynasty (1999) — Seen scampering through the late Cretaceous woods out of the way of Triceratops
Estimated Length & Height: 2 meters (6.6 feet) long / 0.8 meters (2.6 feet) tall
Weight: 100 kg (220 lbs)
Collected: Barnum Brown (1910)
Status/Author/Year: Valid / Barnum Brown / 1914
Area/Locality/Formation: Alberta, Canada / Scollard Formation
Yen Sid's Comments:
"A conservative primitive that survived until the very final days of the dinosaur empire. It refused to adapt the heavy, quad-pedal armor of Triceratops, remaining nimble and light—a testament that sometimes old designs remain perfectly viable."
Species: Microceratus gobiensis
Meaning: Small horn (from the Gobi)
Diet: Herbivore
Epoch/Stage/Years: Late Cretaceous / Turonian to Santonian / 90–85 million years ago
Origin (Franchise): Jurassic World Dominion (2022) — Kept as illegal, adorable exotic pets in the Malta black market scenes
Estimated Length & Height: 60 centimeters (2 feet) long / 25 centimeters (10 inches) tall
Weight: 2 kg (4.4 lbs)
Collected: Birger Bohlin (1930)
Status/Author/Year: Valid / Bohlin / 1953 (Reclassified by Mateus, 2008)
Area/Locality/Formation: Gansu, China / Minhe Formation
Yen Sid's Comments:
"A tiny, two-legged dancer of the dunes. Human stories now frame it as a captured prize in urban markets—a poignant reflection of how human greed often seeks to contain the wild, free sorcery of nature."
Species: Montanoceratops cerorhynchus
Meaning: Montana horned face / Horned snout
Diet: Herbivore
Epoch/Stage/Years: Late Cretaceous / Maastrichtian / 70–69 million years ago
Origin (Franchise): Classic American Paleo-Media — Exploring the transitional ceratopsians of North America
Estimated Length & Height: 3 meters (10 feet) long / 1 meter (3.3 feet) tall
Weight: 170 kg (374 lbs)
Collected: Barnum Brown (1916)
Status/Author/Year: Valid / Charles M. Sternberg / 1951
Area/Locality/Formation: Montana, USA / Saint Mary River Formation
Yen Sid's Comments:
"It retained primitive claws on its feet rather than hooves, yet it bore a profound horn upon its nose. It stood on the absolute threshold between the agile runners and the heavy, horned fortresses."
Species: Protoceratops hellenikorhinus
Meaning: First horned face (Greek-nosed)
Diet: Herbivore
Epoch/Stage/Years: Late Cretaceous / Campanian / 75–71 million years ago
Origin (Franchise): Classic Natural History Expeditions — Contributing to historical myths of the legendary Gryphon
Estimated Length & Height: 2 to 2.5 meters (6.6–8.2 feet) long / 0.75 meters (2.5 feet) tall
Weight: 62 to 180 kg (136 to 400 lbs)
Collected: Sino-Belgian Expedition (1995)
Status/Author/Year: Valid / Olivier Lambert et al. / 2001
Area/Locality/Formation: Inner Mongolia, China / Bayan Mandahu Formation
Yen Sid's Comments:
"With its sharp beak, heavy frill, and desert home, ancient miners mistook its fossils for the gold-guarding Gryphon. A beautiful instance where the natural magic of paleontology gave birth to human mythology."

Family Ceratopidae

Species: Centrosaurus apertus
Meaning: Pointed lizard / Open
Diet: Herbivore
Epoch/Stage/Years: Late Cretaceous / Campanian / 76.5–75.5 million years ago
Origin (Franchise): Planet Dinosaur (2011) — Showcased in vast, thousands-strong herds caught in flash floods
Estimated Length & Height: 5.5 meters (18 feet) long / 1.8 meters (6 feet) tall at hips
Weight: 2,300 kg (2.5 short tons)
Collected: Lawrence Lambe (1898)
Status/Author/Year: Valid / Lawrence Lambe / 1904
Area/Locality/Formation: Alberta, Canada / Dinosaur Park Formation
Yen Sid's Comments:
"Bore a massive, single horn upon its nose that curved forward, flanked by small hooked tabs on its frill. They traveled in vast, thundering congregations that shifted the paths of rivers by their mere passage."
Species: Chasmosaurus belli
Meaning: Opening lizard (Chasm)
Diet: Herbivore
Epoch/Stage/Years: Late Cretaceous / Campanian / 76.5–75.5 million years ago
Origin (Franchise): Disney's Dinosaur (2000) — Inside the refugee herd fleeing the Carnotaurus
Estimated Length & Height: 4.8 meters (16 feet) long / 1.7 meters (5.6 feet) tall
Weight: 2,000 kg (2.2 short tons)
Collected: Lawrence Lambe (1898)
Status/Author/Year: Valid / Lawrence Lambe / 1914
Area/Locality/Formation: Alberta, Canada / Dinosaur Park Formation
Yen Sid's Comments:
"Its frill was a vast, broad sail of bone pierced by huge hollow windows. Covered in vibrant skin, this great shield was not built to stop teeth, but to paint a grand, colorful illusion that would dazzle or terrify onlookers."
Species: Lokiceratops rangiformis
Meaning: Loki's horned face / Shaped like a reindeer
Diet: Herbivore
Epoch/Stage/Years: Late Cretaceous / Campanian / 78 million years ago
Origin (Franchise): Marvel Cinematic Universe Loki Inspiration — Formally named in 2024 after the trickster god's curved horns
Estimated Length & Height: 6.7 meters (22 feet) long / 2 meters (6.5 feet) tall
Weight: 5,000 kg (5.5 short tons)
Collected: Mark Eatman (2019)
Status/Author/Year: Valid / Mark Loewen & Joseph Sertich / 2024
Area/Locality/Formation: Montana, USA / Judith River Formation
Yen Sid's Comments:
"Crowned with massive, asymmetric curved blades atop its frill, reminiscent of the Norse trickster’s headgear. Nature possesses a grand showmanship, shaping weapons so extravagant they appear born directly from ancient myth."
Species: Nasutoceratops titusi
Meaning: Large-nosed horned face
Diet: Herbivore
Epoch/Stage/Years: Late Cretaceous / Campanian / 75.9–75.2 million years ago
Origin (Franchise): Battle at Big Rock (2019) — Featured in the short film overturning a family camping trailer
Estimated Length & Height: 4.5 meters (14.8 feet) long / 1.6 meters (5.2 feet) tall
Weight: 1,500 kg (1.6 short tons)
Collected: Eric Lund (2006)
Status/Author/Year: Valid / Scott Sampson et al. / 2013
Area/Locality/Formation: Utah, USA / Kaiparowits Formation
Yen Sid's Comments:
"Sported long, forward-curving horns that mirrored those of modern cattle, paired with an enormous, ballooning snout. A completely unique silhouette that demonstrates how diverse the ceratopsian canvas truly was."
Species: Pachyrhinosaurus lakustai
Meaning: Thick-nosed lizard (Lakusta's)
Diet: Herbivore
Epoch/Stage/Years: Late Cretaceous / Campanian / 73.5 million years ago
Origin (Franchise): Walking with Dinosaurs: The Movie (2013) — Patchi, the protagonist of the feature film, belongs to this species
Estimated Length & Height: 5 meters (16.4 feet) long / 1.8 meters (6 feet) tall
Weight: 3,000 kg (3.3 short tons)
Collected: Al Lakusta (1974)
Status/Author/Year: Valid / Philip J. Currie et al. / 2008
Area/Locality/Formation: Alberta, Canada; Montana, USA / Pipestone Creek / Wapiti; Hell Creek Formation
Yen Sid's Comments:
"It abandoned long spikes for a massive, rough battering pad of solid bone upon its snout. In our modern cinematic fables, it represents the resilient under-dog who triumphs through persistence and thick-skinned resolve."
Species: Sinoceratops zhuchengensis
Meaning: Chinese horned face (from Zhucheng)
Diet: Herbivore
Epoch/Stage/Years: Late Cretaceous / Campanian to Maastrichtian / 73 million years ago
Origin (Franchise): Jurassic World: Fallen Kingdom (2018) — Famously licked Owen Grady and battled a Carnotaurus during the volcano eruption
Estimated Length & Height: 6 meters (20 feet) long / 2 meters (6.5 feet) tall
Weight: 2,000 to 2,300 kg (2.5 short tons)
Collected: Zhucheng Dinosaur Museum team (2008)
Status/Author/Year: Valid / Xu Xing et al. / 2010
Area/Locality/Formation: Shandong, China / Xingezhuang Formation
Yen Sid's Comments:
"The lone true ceratopid to plant its banner firmly into Asian soil. Its frill was bordered by forward-curving hooks like a crown of flames, demonstrating that majesty knows no continental bounds."
Species: Styracosaurus ovatus
Meaning: Spiked lizard (Ovate)
Diet: Herbivore
Epoch/Stage/Years: Late Cretaceous / Campanian / 75 million years ago
Origin (Franchise): Disney's Fantasia (1940) — Seen migrating through the parched desert landscape during the drought
Estimated Length & Height: 5.5 meters (18 feet) long / 1.8 meters (6 feet) tall
Weight: 2,500 kg (2.7 short tons)
Collected: Charles W. Gilmore (1928)
Status/Author/Year: Valid / Gilmore / 1930 (Reclassified by McDonald & Horner, 2010)
Area/Locality/Formation: Montana, USA / Two Medicine Formation
Yen Sid's Comments:
"A vision of absolute defense. Its frill bristled with long, radiating spears of bone like a portable fortress. When it marched out from the smoke of our early animation, it epitomized the stern, unyielding spirit of the prehistoric world."
Species: Torosaurus latus
Meaning: Perforated lizard (Broad)
Diet: Herbivore
Epoch/Stage/Years: Late Cretaceous / Maastrichtian / 68–66 million years ago
Origin (Franchise): Walking with Dinosaurs (1999) — Showcased locking horns in tests of strength during "Death of a Dynasty"
Estimated Length & Height: 8 meters (26 feet) long / 2.5 meters (8.2 feet) tall
Weight: 6,000 kg (6.6 short tons)
Collected: John Bell Hatcher (1891)
Status/Author/Year: Valid / Othniel Charles Marsh / 1891
Area/Locality/Formation: Wyoming, USA / Lance Formation
Yen Sid's Comments:
"It possessed one of the largest skulls of any land animal to ever live, a shield stretching nearly nine feet across. It shows that sometimes nature prefers to put all its architectural genius into a grand, sweeping front display."
Species: Triceratops horridus
Meaning: Three-horned face (Horrid)
Diet: Herbivore (low, tough palms and cycads)
Epoch/Stage/Years: Late Cretaceous / Maastrichtian / 68–66 million years ago
Origin (Franchise): Jurassic Park (1993) — The iconic, emotional scene where Alan Grant rests against the breathing, sick dinosaur
Estimated Length & Height: 8 to 9 meters (26–30 feet) long / 3 meters (10 feet) tall
Weight: 6,000 to 12,000 kg (6.6 to 13.2 short tons)
Collected: John Bell Hatcher (1888)
Status/Author/Year: Valid / Othniel Charles Marsh / 1889
Area/Locality/Formation: Wyoming, USA / Lance Formation
Yen Sid's Comments:
"The timeless, legendary titan of the Cretaceous horizon. With three solid spears of bone and a shield of unyielding density, it stood as the ultimate counter-weight to the tyrant king. A grand reminder that for every absolute force of destruction, nature creates an equal monument of stubborn defense."

🦕 Infraorder Stegosauria

Family Stegosauridae

Species: Chungkingosaurus jiangbeiensis
Meaning: Chongqing lizard (from Jiangbei)
Diet: Herbivore
Epoch/Stage/Years: Late Jurassic / Oxfordian / 160 million years ago
Origin (Franchise): Jurassic World Evolution 2 (2021) — Featured as a small, highly social Asian stegosaur
Estimated Length & Height: 4 meters (13 feet) long / 1.5 meters (5 feet) tall
Weight: 1,000 kg (1.1 short tons)
Collected: Construction workers (1977)
Status/Author/Year: Valid / Dong Zhiming et al. / 1983
Area/Locality/Formation: Chongqing, China / Upper Shaximiao Formation
Yen Sid's Comments:
"A smaller, elegant cousin from the ancient East. It bore a tail tipped with up to five pairs of long spears. It proves that a compact stature loses none of its formidable magic if it bristles with sharp resolve."
Species: Gigantspinosaurus sichuanensis
Meaning: Giant spined lizard (from Sichuan)
Diet: Herbivore
Epoch/Stage/Years: Late Jurassic / Oxfordian / 160 million years ago
Origin (Franchise): Paleoart History — Renowned for its bizarre, wildly exaggerated shoulder spikes
Estimated Length & Height: 4.2 meters (13.8 feet) long / 1.6 meters (5.2 feet) tall
Weight: 700 kg (1,540 lbs)
Collected: Ouyang Hui (1985)
Status/Author/Year: Valid / Ouyang Hui / 1992
Area/Locality/Formation: Sichuan, China / Upper Shaximiao Formation
Yen Sid's Comments:
"Nature occasionally indulges in dramatic showmanship. This creature carried two colossal shoulder spikes that flared outward like the wings of a stone gargoyle. A grand display meant to terrify the eyes long before teeth could ever close."
Species: Kentrosaurus aethiopicus
Meaning: Spiked lizard (African)
Diet: Herbivore (low foliage)
Epoch/Stage/Years: Late Jurassic / Kimmeridgian to Tithonian / 152 million years ago
Origin (Franchise): Jurassic World: Camp Cretaceous (2020) — "Pierce," the territorial but loyal Kentrosaurus cared for by Sammy
Estimated Length & Height: 4.5 meters (15 feet) long / 1.5 meters (5 feet) tall
Weight: 700 to 1,100 kg (1.2 short tons)
Collected: Werner Janensch / German Tendaguru Expedition (1909)
Status/Author/Year: Valid / Edwin Hennig / 1915
Area/Locality/Formation: Lindi Region, Tanzania / Tendaguru Formation
Yen Sid's Comments:
"While its American cousin wore broad plates, this African wanderer traded them for long, wicked needles across its spine and hips. In modern fables, its sharp exterior guards a fiercely loyal nature—a beautiful truth wrapped in a thorny shroud."
Species: Stegosaurus stenops
Meaning: Roofed lizard / Narrow-faced
Diet: Herbivore (ferns and horsetails)
Epoch/Stage/Years: Late Jurassic / Kimmeridgian to Tithonian / 155–150 million years ago
Origin (Franchise): Disney's Fantasia (1940) — Famously battles the T. rex to the death in the "Rite of Spring" sequence
Estimated Length & Height: 9 meters (30 feet) long / 4 meters (13 feet) tall
Weight: 5,000 to 7,000 kg (5.5 to 7.7 short tons)
Collected: Marshall Parker Felch (1886)
Status/Author/Year: Valid / Othniel Charles Marsh / 1887
Area/Locality/Formation: Colorado & Wyoming, USA / Morrison Formation
Yen Sid's Comments:
"The absolute archetype of our primeval tapestry. When it raised its tail to strike down our animated tyrant, it embodied the raw, desperate struggle for life. Its kite-shaped plates were a masterwork of natural alchemy, flashing warning signals across the Jurassic horizons."
Species: Tuojiangosaurus multispinus
Meaning: Tuo River lizard / Many-spined
Diet: Herbivore
Epoch/Stage/Years: Late Jurassic / Oxfordian to Kimmeridgian / 161–155 million years ago
Origin (Franchise): Planet Dinosaur (2011) — Depicted warding off predatory Sinraptor attacks in dense forests
Estimated Length & Height: 7 meters (23 feet) long / 2.2 meters (7.2 feet) tall
Weight: 2,800 kg (3 short tons)
Collected: Construction teams (1977)
Status/Author/Year: Valid / Dong Zhiming et al. / 1977
Area/Locality/Formation: Sichuan, China / Upper Shaximiao Formation
Yen Sid's Comments:
"A robust, heavily built defender of the Asian wetlands. Its plates were narrow and cone-like, marching down its back like the battlements of a medieval fortress to keep the dark predators at bay."

Family Scelidosauridae

Species: Scelidosaurus harrisonii
Meaning: Limb lizard (Harrison's)
Diet: Herbivore
Epoch/Stage/Years: Early Jurassic / Sinemurian to Pliensbachian / 191 million years ago
Origin (Franchise): National Geographic Dinosaurs — Famous for being one of the first complete dinosaur skeletons ever found
Estimated Length & Height: 4 meters (13 feet) long / 1.2 meters (4 feet) tall
Weight: 270 kg (600 lbs)
Collected: James Harrison (1858)
Status/Author/Year: Valid / Sir Richard Owen / 1859
Area/Locality/Formation: Dorset, England / Charmouth / Charmouth Mudstone Formation
Yen Sid's Comments:
"A gentle, slow pioneer from the dawn of the Jurassic seasides. It carried row upon row of small, bony studs, the very first complete suit of plate-mail molded by nature before the great split into plates and clubs."

🦕 Infraorder Ankylosauria

Family Nodosauridae

Species: Edmontonia rugosidens
Meaning: From Edmonton / Rough teeth
Diet: Herbivore
Epoch/Stage/Years: Late Cretaceous / Campanian to Maastrichtian / 76.5–75 million years ago
Origin (Franchise): Walking with Dinosaurs: The 3D Movie (2013) — Depicted as a heavy, low-slung tank navigating the northern forest floors
Estimated Length & Height: 6 meters (20 feet) long / 1.6 meters (5.2 feet) tall
Weight: 3,000 kg (3.3 short tons)
Collected: Charles M. Sternberg (1915)
Status/Author/Year: Valid / Charles W. Gilmore / 1930
Area/Locality/Formation: Alberta, Canada / Dinosaur Park Formation
Yen Sid's Comments:
"It bore massive, forward-pointing spikes on its shoulders like the iron cowcatchers of a steam locomotive. It moved through the brush like a living shield, completely unbothered by the frantic world around it."
Species: Nodosaurus textilis
Meaning: Knobbed lizard / Woven
Diet: Herbivore
Epoch/Stage/Years: Late Cretaceous / Cenomanian stage / 99 million years ago
Origin (Franchise): Classic American Museum Displays — The namesake specimen for the entire nodosaur family
Estimated Length & Height: 4.5 to 6 meters (15–20 feet) long / 1.5 meters (5 feet) tall
Weight: 1,500 kg (1.6 short tons)
Collected: Arthur Lakes (1881)
Status/Author/Year: Valid / Othniel Charles Marsh / 1889
Area/Locality/Formation: Wyoming, USA / Frontier Formation
Yen Sid's Comments:
"Its armor plates were tightly 'woven' across its back like a fine chainmail tunic. Lacking a tail club, it relied entirely on its seamless, unyielding skin, dropping low to anchor itself firmly to the earth."
Species: Sauropelta edwardsorum
Meaning: Lizard shield (Edwards's)
Diet: Herbivore
Epoch/Stage/Years: Early Cretaceous / Aptian to Albian / 108.5 million years ago
Origin (Franchise): Jurassic World Evolution (2018) — Popular early-game armored dinosaur exhibit choice
Estimated Length & Height: 5.2 meters (17 feet) long / 1.5 meters (5 feet) tall
Weight: 1,500 kg (1.6 short tons)
Collected: Barnum Brown (1932)
Status/Author/Year: Valid / John Ostrom / 1970
Area/Locality/Formation: Montana & Wyoming, USA / Cloverly Formation
Yen Sid's Comments:
"An exceptional early masterpiece of defense. Its neck was guarded by a collar of massive spikes, showing that nature knew how to shield its most vulnerable pathways long before human knights built iron gorgets."
Species: Silvisaurus condrayi
Meaning: Forest lizard (Condray's)
Diet: Herbivore
Epoch/Stage/Years: Late Cretaceous / Cenomanian / 100–95 million years ago
Origin (Franchise): Mid-Western Paleontology Exhibits — Highlighting the early Cretaceous armored explorers of North America
Estimated Length & Height: 4 meters (13 feet) long / 1.2 meters (4 feet) tall
Weight: 1,000 kg (1.1 short tons)
Collected: Warren Condray (1955)
Status/Author/Year: Valid / Theodore Eaton Jr. / 1960
Area/Locality/Formation: Kansas, USA / Dakota Formation
Yen Sid's Comments:
"A relatively light, primitive tank that retained small teeth in the front of its beak. It lived deep within the dense woodlands, using its modest coat of nodules to slide harmlessly through the brambles."

Family Ankylosauridae

Species: Ankylosaurus magniventris
Meaning: Fused lizard / Large belly
Diet: Herbivore (low vegetation, roots)
Epoch/Stage/Years: Late Cretaceous / Maastrichtian / 68–66 million years ago
Origin (Franchise): Jurassic Park III (2001) — Briefly seen foraging in flocks alongside the riverbeds
Estimated Length & Height: 6 to 10 meters (20–32 feet) long / 3.7 meters (12.6 feet) tall
Weight: 4,800 to 8,000 kg (5.3 to 8.8 short tons)
Collected: Barnum Brown (1906)
Status/Author/Year: Valid / Henry Fairfield Osborn / 1908
Area/Locality/Formation: Montana, USA / Hell Creek Formation
Yen Sid's Comments:
"The absolute ultimate expression of defense. Cloaked in an armor of fused bone and wielding a tail club like a colossus's mace, it stood as an untouchable fortress. It proves that an unyielding spirit can survive even beneath the gaze of the grandest tyrants."
Species: Euoplocephalus tutus
Meaning: Well-armed head / Safe
Diet: Herbivore
Epoch/Stage/Years: Late Cretaceous / Campanian / 76.4–75.6 million years ago
Origin (Franchise): Michael Crichton's Jurassic Park Novel (1990) — Described grazing lazily around the park lagoons
Estimated Length & Height: 5.5 meters (18 feet) long / 1.7 meters (5.6 feet) tall
Weight: 2,500 kg (2.7 short tons)
Collected: Lawrence Lambe (1897)
Status/Author/Year: Valid / Lawrence Lambe / 1902 (Reclassified by Lambe, 1910)
Area/Locality/Formation: Alberta, Canada / Dinosaur Park Formation
Yen Sid's Comments:
"Even its eyelids were clad in bone, shutters of defense protecting its liquid eyes. It was a completely self-contained fortress, a testament to nature's capacity to keep life safe behind thick walls."
Species: Minmi paravertebral
Meaning: From Minmi Crossroads / Near vertebrae
Diet: Herbivore (seeds, soft leaves)
Epoch/Stage/Years: Early Cretaceous / Aptian to Albian / 120–112 million years ago
Origin (Franchise): Walking with Dinosaurs (1999) — Seen navigating the frozen winter forests of Australia
Estimated Length & Height: 3 meters (10 feet) long / 1 meter (3.3 feet) tall
Weight: 300 kg (660 lbs)
Collected: Alan Bartholomai (1964)
Status/Author/Year: Valid / Ralph Molnar / 1980
Area/Locality/Formation: Queensland, Australia / Bungil Formation
Yen Sid's Comments:
"A tiny, long-legged tank from the southern ice forests. It possessed unique bony plates along its spine to support its muscles, showing that even the smallest armor-bearer requires inner strength to traverse a cold, challenging world."
Species: Saichania chulsanensis
Meaning: Beautiful one (from Chulsan)
Diet: Herbivore (desert shrubs, succulents)
Epoch/Stage/Years: Late Cretaceous / Campanian / 75–70 million years ago
Origin (Franchise): Dinosaur King (2007) — Featured as an earth-elemental combatant named "Tank"
Estimated Length & Height: 5.2 meters (17 feet) long / 1.6 meters (5.2 feet) tall
Weight: 2,000 kg (2.2 short tons)
Collected: Soviet-Mongolian Paleontological Expeditions (1970)
Status/Author/Year: Valid / Teresa Maryańska / 1977
Area/Locality/Formation: Ömnögovi Province, Mongolia / Barun Goyot Formation
Yen Sid's Comments:
"Named the 'beautiful one' by its finders—a poetic perspective on a beast covered in rough spikes. Its skull housed a maze of air passages to cool the blistering desert wind, a wonderful piece of inner alchemy."

🪶 Suborder Rhamphorhynchoidea

Family Dimorphodontidae

Species: Dimorphodon macronyx
Meaning: Two-form tooth / Large claw
Diet: Carnivore (insects, small vertebrates, fish)
Epoch/Stage/Years: Early Jurassic / Sinemurian stage / 195–190 million years ago
Origin (Franchise): Jurassic World (2015) — Famously swarmed the main avenue alongside Pteranodon
Estimated Length & Height: 1 meter (3.3 feet) long / 45 centimeters (18 inches) tall / 1.45-meter wingspan
Weight: 2 to 4 kg (4.4 to 8.8 lbs)
Collected: Mary Anning (1828)
Status/Author/Year: Valid / Sir Richard Owen / 1859
Area/Locality/Formation: Dorset, England / Lyme Regis / Blue Lias Formation
Yen Sid's Comments:
"A creature of two minds. It possessed a massive, deep skull like a puffin, yet it flew on wings of delicate skin. It proves that nature does not always require sleekness to conquer the air."
Species: Dorygnathus banthensis
Meaning: Spear jaw (from Banz)
Diet: Piscivore (fish hunter)
Epoch/Stage/Years: Early Jurassic / Toarcian stage / 182–174 million years ago
Origin (Franchise): Classic European Paleoart — Widely featured in historical prints illustrating Jurassic marine life
Estimated Length & Height: 60 centimeters (2 feet) long / 1-meter (3.3-foot) wingspan
Weight: 1 kg (2.2 lbs)
Collected: Carl Theodori (1830)
Status/Author/Year: Valid / Johann Andreas Wagner / 1860
Area/Locality/Formation: Baden-Württemberg, Germany / Holzmaden / Posidonia Shale
Yen Sid's Comments:
"Its lower jaw bristled with long, forward-pointing teeth that crossed like iron spears when shut. It was a flawless wicker basket built to snare slippery fish from the sea crests."

Family Eudimorphodontidae

Species: Eudimorphodon ranzii
Meaning: True two-form tooth (Ranzii's)
Diet: Piscivore / Insectivore
Epoch/Stage/Years: Late Triassic / Norian stage / 210 million years ago
Origin (Franchise): National Geographic: Restoring Dinosaurs — Showcased as one of the oldest known fully developed flying reptiles
Estimated Length & Height: 40 centimeters (16 inches) long / 1-meter (3.3-foot) wingspan
Weight: 500 grams (1.1 lbs)
Collected: Mario Pandolfi (1973)
Status/Author/Year: Valid / Rocco Zambelli / 1973
Area/Locality/Formation: Cene, Italy / Zorzino Limestone Formation
Yen Sid's Comments:
"An ancient pioneer that took to the air while the first dinosaurs were still small runners. It carried over a hundred tiny, multi-cusped teeth, a sophisticated toolset from the very dawn of flight."

Family Rhamphorhynchidae

Species: Anurognathus ammoni
Meaning: Without tail jaw
Diet: Insectivore (nocturnal flyer)
Epoch/Stage/Years: Late Jurassic / Tithonian stage / 150.8–148.5 million years ago
Origin (Franchise): Walking with Dinosaurs (1999) — Depicted landing on the backs of giant Diplodocus to feed on parasitic insects
Estimated Length & Height: 10 centimeters (4 inches) long / 50-centimeter (20-inch) wingspan
Weight: 40 grams (1.4 ounces)
Collected: Ludwig von Ammon (1922)
Status/Author/Year: Valid / Lukas Döderlein / 1923
Area/Locality/Formation: Bavaria, Germany / Solnhofen Limestone
Yen Sid's Comments:
"A tiny, ghost-like flyer with a wide frog-mouth and no tail to hinder its turns. It darted through the Jurassic nights like a giant moth, proving that agility can outmaneuver the grandest storms."
Species: Rhamphorhynchus etchesi
Meaning: Beak snout (Steve Etches's)
Diet: Piscivore
Epoch/Stage/Years: Late Jurassic / Kimmeridgian stage / 152 million years ago
Origin (Franchise): The Etches Collection Museum — Formally named in 2020 after the renowned collector Steve Etches
Estimated Length & Height: 40 centimeters (16 inches) long / 1.2-meter (4-foot) wingspan
Weight: 1.5 kg (3.3 lbs)
Collected: Steve Etches (2000s)
Status/Author/Year: Valid / O'Sullivan & Martill / 2020
Area/Locality/Formation: Dorset, England / Kimmeridge Clay Formation
Yen Sid's Comments:
"It bore a needle-sharp beak that locked like a cage. It skimmed the dark lagoons of ancient Britain, a master of watery sorcery that ruled long before the great birds evolved."
Species: Scaphognathus crassirostris
Meaning: Tub jaw / Thick snout
Diet: Carnivore / Piscivore
Epoch/Stage/Years: Late Jurassic / Kimmeridgian stage / 150.8 million years ago
Origin (Franchise): Historical Pterosaur Studies — Critical to early 19th-century scientific debates regarding pterosaur biology
Estimated Length & Height: 50 centimeters (20 inches) long / 1-meter (3.3-foot) wingspan
Weight: 800 grams (1.7 lbs)
Collected: Georg Graf zu Münster (1830)
Status/Author/Year: Valid / August Goldfuss / 1831
Area/Locality/Formation: Bavaria, Germany / Solnhofen Limestone
Yen Sid's Comments:
"Its blunt, deep snout differed greatly from its needle-toothed kin. It represents the endless versatility of nature, which modifies a singular blueprint into countless variations."
Species: Sordes pilosus
Meaning: Filth / Hairy scum
Diet: Insectivore / Amphibivore
Epoch/Stage/Years: Late Jurassic / Oxfordian stage / 160 million years ago
Origin (Franchise): Scientific Revolution Literature — The first fossil to prove conclusively that pterosaurs were covered in a coat of hair-like filaments
Estimated Length & Height: 30 centimeters (12 inches) long / 63-centimeter (2-foot) wingspan
Weight: 200 grams (7 ounces)
Collected: Aleksandr Grigorevich Sharov (1965)
Status/Author/Year: Valid / A. G. Sharov / 1971
Area/Locality/Formation: South Kazakhstan / Karatau Formation
Yen Sid's Comments:
"Slandered by its discoverer with a name meaning 'filth,' yet it revealed a beautiful truth: these sky-dwellers wore a soft, warm coat of fuzz. They were warm-blooded creatures of high metabolism, not cold stone monsters."

🪶 Suborder Pterodactyloidea

Family Tapejaridae

Species: Caiuajara dobruskii
Meaning: Caiuá sorcerer (Dobruski family's)
Diet: Frugivore / Herbivore (specialized fruit-eater)
Epoch/Stage/Years: Late Cretaceous / Coniacian to Santonian / 85 million years ago
Origin (Franchise): Prehistoric Planet (2022) style paleo-media — Famous for a massive, multi-individual bonebed discovery
Estimated Length & Height: 80 centimeters (2.6 feet) tall / 2.35-meter (7.7-foot) wingspan
Weight: 6 to 8 kg (13 to 17 lbs)
Collected: Alexandre Dobruski (1971)
Status/Author/Year: Valid / Paulo Manzig et al. / 2014
Area/Locality/Formation: Paraná, Brazil / Goio-Erê Formation
Yen Sid's Comments:
"Dozens of these creatures were found buried together, their skulls topped by immense bone sails like kites. They flew in great social flocks, an elegant assembly of color across the South American deserts."

Family Anhangueridae

Species: Cearadactylus atrox
Meaning: Ceará finger / Savage
Diet: Piscivore
Epoch/Stage/Years: Early Cretaceous / Albian stage / 112 million years ago
Origin (Franchise): Michael Crichton's Jurassic Park Novel (1990) — Terrorized Alan Grant and the kids inside the giant aviary structure
Estimated Length & Height: 1 meter (3.3 feet) long / 4 to 5.5-meter (13–18 foot) wingspan
Weight: 15 kg (33 lbs)
Collected: Fossil dealers (1980s)
Status/Author/Year: Valid / Leonardi & Borgomanero / 1985
Area/Locality/Formation: Ceará, Brazil / Santana Group
Yen Sid's Comments:
"A truly savage spirit of the high canopies. It bore a kinked jaw tip packed with interlocking teeth designed to snare marine prey. In human fiction, its aggressive nesting nature makes it a formidable warden of the skies."

Family Ornithocheiridae

Species: Geosternbergia sternbergi
Meaning: George Sternberg's mountain
Diet: Piscivore
Epoch/Stage/Years: Late Cretaceous / Coniacian to Santonian / 88–83 million years ago
Origin (Franchise): The Lost World: Jurassic Park (1997) style reference — Representing the high-crested giants of the Western Interior Seaway
Estimated Length & Height: 1.5 meters (5 feet) tall / 6-meter (20-foot) wingspan
Weight: 20 to 35 kg (44 to 77 lbs)
Collected: George F. Sternberg (1952)
Status/Author/Year: Valid / Chris Bennett / 1994 (Reclassified by Kellner, 2010)
Area/Locality/Formation: Kansas, USA / Niobrara Formation
Yen Sid's Comments:
"The males carried an immense, upright crest shaped like a flat banner or a dynamic blade. It stood as a signpost of authority, catching the wind and the eyes of its fellows over the breaking waves."
Species: Pteranodon longiceps
Meaning: Winged toothless / Long head
Diet: Piscivore (pelagic hunter)
Epoch/Stage/Years: Late Cretaceous / Coniacian to Campanian / 86–84 million years ago
Origin (Franchise): Disney's Fantasia (1940) — Seen gliding effortlessly in front of the brewing volcano storms
Estimated Length & Height: 1.8 meters (6 feet) tall / 5.6 to 7-meter (18–23 foot) wingspan
Weight: 20 to 50 kg (44 to 110 lbs)
Collected: Othniel Charles Marsh (1870)
Status/Author/Year: Valid / Othniel Charles Marsh / 1876
Area/Locality/Formation: Kansas, USA / Smoky Hill Chalk / Niobrara Formation
Yen Sid's Comments:
"A timeless icon of our early hand-drawn tapestry. It abandoned teeth completely, relying on a blade-like beak and a long backward head-crest to balance its flight across the open ocean."
Species: Quetzalcoatlus lawsoni
Meaning: Feathered serpent god (Douglas Lawson's)
Diet: Carnivore (terrestrial stalker / small animals)
Epoch/Stage/Years: Late Cretaceous / Maastrichtian stage / 68–66 million years ago
Origin (Franchise): Jurassic World Dominion (2022) — The massive cousin (Q. northropi) tore apart a cargo plane in mid-air
Estimated Length & Height: 13.5 meters (44.5 feet) tall / 4.5 to 25.5-meter (15–82.5 foot) wingspan
Weight: 45 to 650,000 kg (100 to 143,000 lbs)
Collected: Douglas A. Lawson (1971)
Status/Author/Year: Valid / Brian Andres et al. / 2021
Area/Locality/Formation: Texas, USA / Javelina Formation
Yen Sid's Comments:
"Named after a legendary sky deity, this creature stood as tall as a giraffe on land. It hunted on four feet like an enormous stork, a magnificent and terrifying monument of the late Cretaceous horizons."

Family Pterodaustriidae

Species: Pterodaustro guinazui
Meaning: Southern wing (Guiñazú's)
Diet: Filter-feeder (plankton and micro-crustaceans)
Epoch/Stage/Years: Early Cretaceous / Aptian stage / 125–120 million years ago
Origin (Franchise): Dino Dan (2010) — Featured flamingo-like filter feeding habits in shallow water
Estimated Length & Height: 40 centimeters (16 inches) tall / 2.5-meter (8.2-foot) wingspan
Weight: 2 to 3 kg (4.4 to 6.6 lbs)
Collected: José Bonaparte (1969)
Status/Author/Year: Valid / José Bonaparte / 1970
Area/Locality/Formation: San Luis Province, Argentina / Laganarcis Formation
Yen Sid's Comments:
"Its lower jaw curved upward, packed with over a thousand bristles like a fine whale comb. It filtered the pink shallow waters of the South American lakes, a beautiful testament to how nature handles delicacy on a grand scale."

🦈 Class Chondrichthyes (Cartilaginous Fishes)

Order Lamniformes / Family Otodontidae

Species: Otodus megalodon
Meaning: Ear-shaped tooth / Giant tooth
Diet: Carnivore (Apex predator hunting whales and marine mammals)
Epoch/Stage/Years: Miocene to Pliocene / 23–3.6 million years ago
Origin (Franchise): The Meg (2018) — Featured as a resurrected, deep-ocean titan terrorizing modern waters
Estimated Length & Height: 15 to 20 meters (50–65 feet) long / 3 meters (10 feet) tall at dorsal fin
Weight: 48,000 to 100,000 kg (53 to 110 short tons)
Collected: Historical teeth prized for centuries; formally described in the 19th century
Status/Author/Year: Valid / Louis Agassiz / 1843
Area/Locality/Formation: Global Distribution / Cosmopolitan Oceans / Yorktown Formation
Yen Sid's Comments:
"A terrifying shadow from the younger oceans. It traded the armor of the ancient world for pure, hydrodynamic speed and a jaw that could swallow a small sailing vessel whole. It reminds us that even when the age of dragons passed, nature found new ways to shape absolute dominion."

🐟 Class Placodermi (Armored Fishes)

Order Arthrodira / Family Dunkleosteidae

Species: Dunkleosteus amblyodoratus
Meaning: David Dunkle's bone / Blunt spear
Diet: Carnivore (Apex marine predator, armored fish, trilobites)
Epoch/Stage/Years: Late Devonian / Famennian stage / 360 million years ago
Origin (Franchise): Sea Monsters: A Walking with Dinosaurs Trilogy (2003) — Highlighted as the apex terror of the "Fifth Most Deadly Sea"
Estimated Length & Height: 4 to 14 meters (13–46 feet) long / 2.2 meters (7.7 feet) tall
Weight: 6,000 kg (4.1 short tons)
Collected: Cleveland Shale Collectors (2010s)
Status/Author/Year: Valid / Robert Carr & Hlavin / 2010
Area/Locality/Formation: Ohio, USA / Cleveland / Cleveland Shale Member
Yen Sid's Comments:
"Born from an age long before the first trees or dinosaurs claimed the land. It wore a heavy helmet of solid bone and possessed no true teeth, slicing its prey with self-sharpening jaw plates like giant shears. A brutal, ancient alchemy of defense and destruction."

🌊 Order Ichthyosauria (Fish-Lizards)

Family Ichthyosauridae

Species: Ichthyosaurus conybeari
Meaning: Fish lizard (named after William Conybeare)
Diet: Piscivore / Teuthivore (fish and ancient squid)
Epoch/Stage/Years: Early Jurassic / Hettangian to Sinemurian / 200–190 million years ago
Origin (Franchise): Disney's Fantasia (1940) — Seen leaping gracefully from the primordial ocean waves
Estimated Length & Height: 2 to 3 meters (6.6–10 feet) long / 0.6 meters (2 feet) tall
Weight: 90 to 150 kg (200 to 330 lbs)
Collected: Mary Anning (1810s/1820s)
Status/Author/Year: Valid / Lydekker / 1888
Area/Locality/Formation: Dorset, England / Lyme Regis / Blue Lias Formation
Yen Sid's Comments:
"A beautiful reptile that turned its back on the shore to become indistinguishable from a fish. In our animated chronicle, they cut through the waters with the effortless rhythm of a dance, proving that life can master any element it chooses to embrace."

🦕 Order Plesiosauria (Near-Lizards)

Family Plesiosauridae

Species: Elasmosaurus platyurus
Meaning: Thin-plate lizard / Flat-tailed
Diet: Piscivore (small schooling fish, cephalopods)
Epoch/Stage/Years: Late Cretaceous / Campanian stage / 80.5 million years ago
Origin (Franchise): Chased by Sea Monsters (2003) — Starred as a long-necked surface hunter in the dangerous Cretaceous waters
Estimated Length & Height: 10.3 meters (34 feet) long / 1.5 meters (5 feet) tall
Weight: 2,000 kg (2.2 short tons)
Collected: Theophilus Turner (1867)
Status/Author/Year: Valid / Edward Drinker Cope / 1868
Area/Locality/Formation: Kansas, USA / Pierre Shale Formation
Yen Sid's Comments:
"A creature with a neck holding over seventy individual vertebrae—far longer than its entire body. Its discovery sparked a famous feud when a young scholar mistakenly placed its skull upon its tail. A reminder that in science, as in magic, a simple lapse in focus can twist the truth into a bizarre illusion."
Species: Plesiosaurus dolichodeirus
Meaning: Near lizard / Long necked
Diet: Piscivore
Epoch/Stage/Years: Early Jurassic / Sinemurian stage / 199–191 million years ago
Origin (Franchise): Historic Geology Prints / The Loch Ness Monster Legend Lore — The biological blueprint for modern lake monster myths
Estimated Length & Height: 3.5 meters (11.5 feet) long / 1 meter (3.3 feet) tall
Weight: 400 kg (880 lbs)
Collected: Mary Anning (1823)
Status/Author/Year: Valid / William Conybeare / 1824
Area/Locality/Formation: Dorset, England / Lyme Regis / Blue Lias Formation
Yen Sid's Comments:
"It swam through the ancient coastal shallows using four large flippers like wings, flying beneath the waves. Human imagination loves its silhouette so deeply that they keep its memory alive in tales of modern, hidden lochs."

Family Pliosauridae

Species: Attenborosaurus conybeari
Meaning: David Attenborough's lizard
Diet: Piscivore / Carnivore
Epoch/Stage/Years: Early Jurassic / Sinemurian stage / 190 million years ago
Origin (Franchise): Named directly in honor of Sir David Attenborough / BBC Natural History
Estimated Length & Height: 5 meters (16.4 feet) long / 1.2 meters (4 feet) tall
Weight: 1,000 kg (1.1 short tons)
Collected: Museum Workers (1880s)
Status/Author/Year: Valid / W. J. Sollas / 1881 (Reclassified by Bakker, 1993)
Area/Locality/Formation: Dorset, England / Charmouth Mudstone
Yen Sid's Comments:
"Named after a great modern chronicler of the natural world, this unique beast sat on the threshold between the long-necked grazers of the reef and the giant short-necked predators of the deep. Nature's transitions are full of quiet wisdom."
Species: Kronosaurus queenslandicus
Meaning: Kronos's lizard (named after the Titan king)
Diet: Carnivore (Apex predator hunting large marine reptiles and sharks)
Epoch/Stage/Years: Early Cretaceous / Aptian to Albian / 120–110 million years ago
Origin (Franchise): Ark: Survival Evolved Modded Lore / Paleoart History — Known as the heavy-weight gladiator of the southern oceans
Estimated Length & Height: 9 to 10.5 meters (30–34 feet) long / 2 meters (6.5 feet) tall
Weight: 7,000 to 11,000 kg (7.7 to 12 short tons)
Collected: Andrew Crombie (1889)
Status/Author/Year: Valid / Longman / 1924
Area/Locality/Formation: Queensland, Australia / Hughenden / Toolebuc Formation
Yen Sid's Comments:
"Named after the mythic titan who devoured his own offspring. It carried a skull larger than a man, housing teeth as thick as iron spikes. It ruled the cold southern seas with an absolute, unyielding power that brooked no rivals."
Species: Liopleurodon ferox
Meaning: Smooth-sided tooth / Ferocious
Diet: Carnivore (Apex ambush hunter)
Epoch/Stage/Years: Late Jurassic / Callovian to Oxfordian / 166–155 million years ago
Origin (Franchise): Walking with Dinosaurs (1999) — Famed for its highly exaggerated 25-meter size description in the classic series
Estimated Length & Height: 5 to 7 meters (16–23 feet) long / 1.5 meters (5 feet) tall
Weight: 1,000 to 3,000 kg (1.1 to 3.3 short tons)
Collected: Sauvage Crew (1873)
Status/Author/Year: Valid / Henri Émile Sauvage / 1873
Area/Locality/Formation: Boulogne-sur-Mer, France / Oxford Clay Formation
Yen Sid's Comments:
"A patient stalker of the Jurassic deep, gifted with a directional sense of smell that could track prey through miles of dark water. While modern showmen magnified its size into a mountain, its real dimensions were perfectly sculpted to be a swift, silent master of ambush."

🦎 Order Squamata (Lizards and Snakes)

Family Mosasauridae

Species: Mosasaurus beaugei
Meaning: Meuse River lizard (Beaugé's)
Diet: Carnivore (Apex generalist, fish, turtles, smaller mosasaurs)
Epoch/Stage/Years: Late Cretaceous / Maastrichtian stage / 70–66 million years ago
Origin (Franchise): Jurassic World (2015) style family reference — Representing the giant marine lizards that claimed the final Mesozoic seas
Estimated Length & Height: 8 to 36 meters (26–120 feet) long / 4.5 meters (15 feet) tall
Weight: 4,000 to 15,000 kg (4.4 to 20.6 short tons)
Collected: Arambourg Crew (1950s)
Status/Author/Year: Valid / Camille Arambourg / 1952
Area/Locality/Formation: Khouribga Province, Morocco / Ouled Abdoun Basin
Yen Sid's Comments:
"They were not dinosaurs, nor true fish, but giant ocean-going monitor lizards that evolved paddle-limbs and a tail like a shark. They entered the aquatic arena late in history, yet they claimed total dominion over the oceans just as the final curtain fell on the Mesozoic era."

🏛️ Order Pelycosauria

Family Sphenacodontidae

Meaning: Two-measures tooth / Large wedge-tooth
Diet: Carnivore (Apex terrestrial predator of early Pangaea)
Epoch/Stage/Years: Early Permian / Artinskian to Kungurian stages / 295–272 million years ago
Origin (Franchise): Disney's Fantasia (1940) — Seen walking on rocks during the dawn-of-life storm sequences
Estimated Length & Height: 3.1 to 4.6 meters (10–15 feet) long / 1.2 meters (4 feet) tall at the sail
Weight: 250 kg (550 lbs)
Collected: First remains recovered by Edward Drinker Cope (1878)
Status/Author/Year: Valid / Edward Drinker Cope / 1878
Area/Locality/Formation: Texas & Oklahoma, USA / Red Beds / Arroyo Formation
Yen Sid's Comments:
"Often mislabeled by mortals as a dinosaur, this magnificent creature belongs to our own lineage of blood. Its colossal dorsal sail acted as a natural bellows, absorbing or shedding the heat of the Permian sun to power its predatory strike. It is a striking reminder that the roots of the mammalian world were planted in armor and flame long before the age of reptiles truly blossomed."

🦴 Order Therapsida (Advanced Mammal-Relatives)

Suborder Dicynodontia / Family Lystrosauridae

Species: Lystrosaurus curvatus
Meaning: Shovel lizard / Curved
Diet: Herbivore (roots, tubers, and tough dicroidium ferns)
Epoch/Stage/Years: Late Permian to Early Triassic / Changhsingian to Induan / 254–251 million years ago
Origin (Franchise): Jurassic World Dominion (2022) — Nicknamed "Leonard," who famously bit a black-market smuggler's hand in Malta
Estimated Length & Height: 1 meter (3.3 feet) long / 40 centimeters (16 inches) tall
Weight: 90 kg (200 lbs)
Collected: Dr. Robert Broom (early 1900s)
Status/Author/Year: Valid / Sir Richard Owen / 1859
Area/Locality/Formation: South Africa & Antarctica / Karoo Basin / Balfour Formation
Yen Sid's Comments:
"A truly miraculous survivor. When the great Permian extinction swept through the world like a dark plague, wiping out nearly all life, this humble burrower endured. Its specialized tusks and barrel chest allowed it to dig beneath the ash, making it the undisputed heir to a scarred and empty world. Outlasting a cataclysm requires not a fierce crown, but the simple magic of resilience."

Suborder Dicynodontia / Family Geikiidae

Species: Bulbasaurus phylloxyron
Meaning: Bulbous reptile / Leaf razor
Diet: Herbivore (tough, fibrous Late Permian vegetation)
Epoch/Stage/Years: Late Permian / Wuchiapingian stage / 260–255 million years ago
Origin (Franchise): Nintendo's Pokémon Lore — While named for its bulbous nasal bones, the authors noted the similarity to the grass-type Pokémon, Bulbasaur, "may not be entirely coincidental".
Estimated Length & Height: 60 centimeters (2 feet) long / 25 centimeters (10 inches) tall
Weight: 3 to 5 kg (6.6 to 11 lbs)
Collected: Found in old museum archives; formally recognized by Christian F. Kammerer & Roger M. H. Smith (2017)
Status/Author/Year: Valid / Kammerer & Smith / 2017
Area/Locality/Formation: Eastern Cape, South Africa / Karoo Basin / Tropidostoma Assemblage Zone
Yen Sid's Comments:
"A fascinating small entity with a turtle-like beak and proportionally massive tusks. It is amusing how human scholars, deliberately or through subconscious enchantment, gave this 'leaf razor' a name mirroring a fictional pocket monster. It proves that the ancient past and modern human mythologies are frequently woven from the exact same threads of imagination."

Suborder Metatheria

Family Alphadontidae

Species: Alphadon halleyi
Meaning: First tooth (Halley's)
Diet: Omnivore / Insectivore (insects, small fruits, lizards)
Epoch/Stage/Years: Late Cretaceous / Campanian stage / 77–75 million years ago
Origin (Franchise): Classic Mesozoic Mammal Studies — Highlighted in documentaries exploring the mammalian survivors of the asteroid impact
Estimated Length & Height: 30 centimeters (12 inches) long (excluding long tail) / 10 centimeters (4 inches) tall
Weight: 200 grams (7 ounces)
Collected: Jack Horner / Museum teams (1980s)
Status/Author/Year: Valid / Sahni / 1972
Area/Locality/Formation: Montana, USA / Two Medicine Formation
Yen Sid's Comments:
"A true primitive marsupial that lived directly in the shadow of giant horned ceratopsians and tyrant kings. Scurrying through the high tree canopies, it carried its tiny, altricial young safely tucked within a skin pouch. While the grand dinosaurs ruled the daytime horizons, this quiet night-walker was refining the complex mammalian blueprint that would one day inherit the entire earth."

References

↑ "Film releases". Variety Insight. Archived from the original on April 1, 2017. Retrieved April 4, 2017.
↑ ^2.0 ^2.1 Scott, Ryan. (September 11, 2016) Jurassic World 2 Director Confirms New Trilogy Is Coming. MovieWeb. Retrieved June 14, 2018
↑ Nicholson, Amy (January 13, 2010). EXCLUSIVE: 'Captain America' & 'JP4' News Box Office. Retrieved June 14, 2018
↑ Christ (September 21, 2015) Colin Trevorrow reveals the plot direction for Jurassic World 2 and confirms a Jurassic World trilogy! Scified. Retrieved June 14, 2018
↑ (February 21, 2018). JURASSIC WORLD 3 WILL BE RELEASED JUNE 11, 2021. Jurassic World. Retrieved June 30, 2018
↑ http://www.jurassicworld2movie.com/news/jurassic-world-3-new-character-details-revealed
↑ https://jurassicoutpost.com/exclusive-colin-trevorrow-shares-his-experiences-with-fallen-kingdom-talks-hopes-for-jurassic-world-3/

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This article "Jurassic World III" is from Simple English Wikipedia. The list of its authors can be seen in its historical and/or the page Edithistory:Jurassic World III.

[insight-1] "Film releases". Variety Insight. Archived from the original on April 1, 2017. Retrieved April 4, 2017.

[LRM-2] 2.0 ^2.1 Scott, Ryan. (September 11, 2016) Jurassic World 2 Director Confirms New Trilogy Is Coming. MovieWeb. Retrieved June 14, 2018

[3] Nicholson, Amy (January 13, 2010). EXCLUSIVE: 'Captain America' & 'JP4' News Box Office. Retrieved June 14, 2018

[JWIIPodcast-4] Christ (September 21, 2015) Colin Trevorrow reveals the plot direction for Jurassic World 2 and confirms a Jurassic World trilogy! Scified. Retrieved June 14, 2018

[5] (February 21, 2018). JURASSIC WORLD 3 WILL BE RELEASED JUNE 11, 2021. Jurassic World. Retrieved June 30, 2018

[6] ttp://www.jurassicworld2movie.com/news/jurassic-world-3-new-character-details-revealed

[7] ttps://jurassicoutpost.com/exclusive-colin-trevorrow-shares-his-experiences-with-fallen-kingdom-talks-hopes-for-jurassic-world-3/

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