Pliosaur tooth, giant marine reptile Troodon Specimens are known to have

Specimens are known to have been made of flint

The body was covered with thick

is an extinct carnivorous mammal of the genus Canis

The type species is M

Pliosaur tooth, giant marine reptile Troodon Specimens are known to havePLIOSAURUS(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)