Stegosaurus-header-icon "Ooh, ah," that's how it always starts. But then later there's running and screaming."

This page contains spoilers from an upcoming, or newly released, installment of the Jurassic Park franchise. If you don't want spoilers, leave the page!

Jurassic logo
This article contains information taken from the (removed) Jurassic Park Institute site
Official Jurassic Park 3 Size Chart Artwork

Name meaning

"Horned Lizard"




~4 meters (13 feet[1]), 3 meters (10 feet) real life


~9 meters (30 feet[1]), 6 meters (20 feet) real life


1 ton movie, 1,155 lbs real life


Utah, Colorado, USA; Tanzania, east Africa; Portugal


Isla Sorna

Birth type


Movie canon appearances

Jurassic Park III

Game appearances

Jurassic Park: Operation Genesis
Jurassic Park: Explorer
Jurassic Park III: Park Builder
Jurassic Park: Builder
Jurassic World: The Game
Jurassic World: Evolution

Toy appearances

Die-Cast: Jurassic Park
Jurassic Park: Chaos Effect (Cut)
Jurassic World

Template Source

Ceratosaurus was a medium sized carnivore that lived at the same time as the larger Allosaurus, in the Late Jurassic period. However, it also lived some millions of years before the emergence of the successful allosauroids, being of the more primitive four fingered Ceratosauria. What makes it different and distinctive is the large horn on top of its nose and the two horns over its eyes. The use of it has been debated and is most likely used for display, a weapon, or a special used for courtship battles. About 100 years ago, when it was first discovered, it was one of the most well-known dinosaurs. Another unusual feature is that Ceratosaurus had four fingers on its hands, instead of the more common three among the other large meat-eaters. This is typically an indication that this theropod is relatively primitive, whose ancestral relatives are from the earlier times of the Mid Triassic to Mid Jurassic periods when coelophysoideans and ceratosaurians were much more prevalent. Allosaurids and megalosaurian carnosaurs, both kinds tetanurans, were much more advanced, with greater speed and intelligence, as well as the ability in at least allosaurids to form packs.

It is probable that the Ceratosaurus ended up being sidelined by the Allosaurus in North America, as evidenced by the fact that Ceratosaurus is the rarest fossil theropod genus present in the magnificent Cleveland Lloyd Dinosaur Quarry. It probably became a prowler of the forest, using its terrifying dentition when ambushing smaller Dinosaurs.

This information is given about Ceratosaurus in Jurassic Park: Explorer:

  • Ceratosaurus - smaller and more bird-like than it's cousin Allosaurus.
  • Ceratosaurus was named for the single horn on its snout.
  • It was probably more of a scavenger, but may have also hunted aquatic prey.
Wikipedia has a more detailed and comprehensive article on Ceratosaurus




Ceratosaurus was created by InGen in their compound on Isla Sorna where they were taken care of by the workers there.[2][3] Like all of InGen's cloned theropods, Ceratosaurus had pronated wrists. The clones had a bright red head and a yellow body with black striping. The only known individual seen also had small horns over the eyes like a Ceratosaurus juvenile and was slightly larger than the original with the most notable difference in size being that it was 3 meters in height rather than 2 meters.[4][1]

Ceratosaurus was not planned for Jurassic Park.[5]

In the wild

When Hurricane Clarissa struck Isla Sorna, the InGen workers abandoned the island. The Ceratosaurs that were under their care were either freed by their caretakers or escaped on their own. In the wild, one of the ways Ceratosaurs countered the Lysine contingency was by eating herbivorous dinosaurs who in turn ate lysine rich plants.[3]

Ceratosaurus lived in the northern portion of the island.[2]

Isla Sorna Incident (2001)

A Ceratosaurus encountered Dr. Alan Grant and the Kirby family on a riverbank when they were digging through Spinosaurus dung. The humans thought it would attack them, but instead it went away, having been detoured by the Spinosaurus dung that was on them. [2]

By the year 2019, Ceratosaurus had apparently gone extinct on Isla Nublar.[6]


Jurassic Park III: Park Builder

Ceratosaurus can be created in Jurassic Park III: Park Builder.

Jurassic Park: Operation Genesis

see Ceratosaurus/Operation Genesis

Ceratosaurus is available as a two-star, small carnivore in the game Jurassic Park: Operation Genesis. Its appearance is based on the movie. However, Ceratosaurus‘ upper jaw is actually smaller than the movie's design.

Ceratosaurus hunts larger herbivores in packs or even by itself for that matter. It is known to posses cannibalism when no other food is around. Ceratosaurus can coexist with the Albertosaurus, Dilophosaurus[citation needed] and Allosaurus (though they do fear it and flee when it is near[citation needed]) and even with smaller carnivores like Velociraptor, but this only occurs when they are not hungry or attacking each other. However with the smaller carnivores like Velociraptor the Ceratosaurus coexists either way and can even share its meals among the smaller theropods.

Jurassic Park: Explorer

Ceratosaurus is featured in the DVD game Jurassic Park: Explorer. A player earns a dinosaur when he/she wins a minigame, when the earned dinosaur is a Ceratosaurus this video will be shown. It is stated that Ceratosaurus was a cousin to Allosaurus, when actually both dinosaurs are distantly related.

Jurassic Park: Builder


Ceratosaurus is one of the available dinosaurs in the IOS application, Jurassic Park: Builder. It has the small horns over the eyes like the one in the film and juvenile Ceratosaurus and unlike adult Ceratosaurs.

Jurassic World: The Game

see Ceratosaurus/JW: TG

Ceratosaurus was added to the game on January 22, 2016 as a limited tournament dinosaur. It is a legendary carnivore. It has the small horns over the eyes like the one in the film and juvenile Ceratosaurus and unlike adult Ceratosaurs. It has three long finger rather than the four short ones the real animal had.

Jurassic World: Evolution

The Ceratosaurus will appear in Jurassic World: Evolution, seen in the second in-game trailer footage. It looks a lot like the Jurassic Park III movie version, with a red at the head with black marks and white body. However, it takes more after its real-life counterpart, including a thinner skull with more prominent brow horns.

Die-Cast: Jurassic Park

With the release of the Jurassic Park film in 1993, the Die-Cast: Jurassic Park toy line was released. It contained a metal Ceratosaurus action figure. The package also contained a Collector card featuring Ceratosaurus (Nr. 19 of the Jurassic Park Collector Cards). The Ceratosaurus has a red head and lighter (green) body.

Jurassic Park: Chaos Effect

A Ceratosaurus figure was originally going to appear in the toy line Jurassic Park: Chaos Effect, but it was scrapped and many of its features were added on to the Paradeinonychus of the same line.

Jurassic World

A light and sound Ceratosaurus figure is part of the Jurassic World toy line. It resembles the creature, and sports the same coloration, seen in Jurassic Park III. Pressing its wound causes the toy to roar and pushing down its tail causes it to do the same action plus biting in a downward motion. It uses the roars of the Tyrannosaurus rex from the films.[7]

Jurassic World: Fallen Kingdom

A new figure of Ceratosaurus will be featured in a toy line for Jurassic World: Fallen Kingdom. It will be part of the "Roar-a-vores" line, which is made up of electronic dinosaurs with roaring sounds.

Behind the scenes


Jurassic Park III Ceratosaurus concept art.

In the script for Jurassic Park III Carnotaurus was originally supposed to be the dinosaur that the group encountered at the Spinosaur dung site.[8] This could be why the Ceratosaurus in Jurassic Park III has a color scheme similar to the Carnotaurus in Disney's Dinosaur that was released a year before. Its color scheme is also similar to Ceratosaurus in the toy line Die-Cast: Jurassic Park (see the "Toys" tab for a picture). In Jurassic Park III, The model of the Ceratosaurus was a modified T. rex model by Model Supervisor Ken Bryan according to the commentary of Jurassic Park III.[citation needed]

The Jurassic Park III Ceratosaurus color scheme also seems to used for the Level 30 Ceratosaurus in Jurassic Park: Builder (see the "Games" tab for a picture).

A base form Ceratosaurus in Jurassic World: The Game looks similar to a base form Carnoraptor (see the "Games" tab for a picture).


  1. 1.0 1.1 1.2 Jurassic Park III poster.
  2. 2.0 2.1 2.2 Jurassic Park III
  3. 3.0 3.1 The Lost World: Jurassic Park
  4. Jurassic Park III Size Chart
  5. Ceratosaurus is not seen on the Jurassic Park brochure.
  6. according to the Dinosaur Protection Group, Spinosaurus is one of the 12 dinosaur species extinct by the setting of the film.
  7. "Jurassic World" figures from Hasbro NY Toy Fair Event - 2015
  8. Jurassic Park III film script: Scene 101
Jurassic Park III Dinosaurs
AnkylosaurusBrachiosaurusCeratosaurusCompsognathusCorythosaurusParasaurolophusPteranodonSpinosaurusStegosaurusTriceratopsTyrannosaurus rexVelociraptor