Ceratosaurus
| Ceratosaurus Temporal range: Upper Jurassic |
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| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Sauropsida |
| Superorder: | Dinosauria |
| Order: | Saurischia |
| Suborder: | Theropoda |
| Infraorder: | Ceratosauria |
| Family: | †Ceratosauridae |
| Genus: | †Ceratosaurus |
Ceratosaurus was a predatory dinosaur from the Upper Jurassic period, 156 to 145 million years ago. It had a large horn on its nose, and a pair of smaller horns in front of its eyes. Uniquely among theropods, Ceratosaurus had armor, in the form of small osteoderms running down the middle of its back.
