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ZoomDinosaurs.com
ALL ABOUT DINOSAURS!
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Ceratosaurus
"Horn Lizard"
Ceratosaurus Printout


ANATOMY
Ceratosaurus was a powerful predator that walked on two strong legs, had a strong, s-shaped neck, and had a short horn on its snout. It had a massive tail, a bulky body, and heavy bones. Its arms were short and it had four-fingered hands (a primitive configuration) with sharp claws. It also had large eyes (and therefore probably had very good eyesight).

Ceratosaurus was 15 to 20 feet long (4.5 to 6 m) long, weighing roughly 0.5 to 1 ton (500 kg to 1 tonne). It had a skull a snout horn and two short brow ridges, and bony knobs and ridges above its eyes and on the top of the head. This common hunter had large, powerful jaws with long, sharp, teeth.

WHEN CERATOSAURUS LIVED
Ceratosaurus was a large but common meat-eater from the late Jurassic period, about 156 million to 145 million years ago.

BEHAVIOR
Ceratosaurus may have hunted in groups. In groups, Ceratosaurus could have ambushed even the very large sauropods. Ceratosaurus competed with the giant predator Allosaurus for iguanodonts, stegosaurs, sauropods.

INTELLIGENCE
Ceratosaurus was a theropod, whose intelligence (as measured by its relative brain to body weight, or EQ) was high among the dinosaurs.

DIET
Ceratosaurus was a carnivore, a meat eater. It was a large, fierce predator that could kill even large sauropods. Ceratosaurus may also have been a scavenger.

LOCOMOTION
Ceratosaurus walked on two muscular legs.

DISCOVERY OF FOSSILS
Ceratosaurus was named in 1884 by paleontologist Othniel C. Marsh, who theorized that Ceratosaurus was a good swimmer, like the crocodilians (since it had a long, thin tail). Many Ceratosaurus fossils have been found, in Colorado and Utah, USA, and in Tanzania, Africa.

CLASSIFICATION
Ceratosaurus belonged to the:


Information Sheets About Dinosaurs
(and Other Prehistoric Creatures)

Just click on an animal's name to go to that information sheet. If the dinosaur you're interested in isn't here, check the Dinosaur Dictionary or the list of Dinosaur Genera. Names with an asterisk (*) were not dinosaurs.
How to write a great dinosaur report.

For dinosaur printouts, click here.

For brief dinosaur fact sheets, click here.




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