Pliosaur tooth, giant marine reptile Baryonyx Remains of many species are

Remains of many species are known from North America

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About 20 million years ago a dense tropical forest

Index of Fossils

Pliosaur tooth, giant marine reptile Baryonyx Remains of many species arePLIOSAURUS(pronounced PLY oh SAWR us) Pliosaurus (meaning "greater lizard") was a huge, short necked plesiosaur that lived during the middle to late Jurassic period. This carnivore was a flippered marine reptile (a pliosaur and a plesiosaur, but not a dinosaur) with many sharp teeth in large, powerful jaws resembling those of a crocodile; the teeth were three sided in cross section. It was 33 40 ft (10 12 m) long and the skull was 5 6. 6 ft (1. 5 2 m)