CERATOSAURUS nasicornis This therapod had a pair of bony ridges above its eyes and a horn on its snout. These were probably used by males when fighting for a mate. Ceratosaurus was an active predator and had massive jaws and a hand with four fingers, unlike Allosaurus, who had three.
TIME - 156 - 145 MYA, Late Jurassic.
RANGE - USA Colorado, Utah, Wyoming, Africa - Tanzania (Mtwara).
DIET - Carnivore (meat eater)
SIZE - Up to 20ft (6m) long.
WEIGHT - 1 US ton.
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