12-Letter Words Containing: OSAUR_

• any of several marine reptiles of the Mesozoic having a body like a porpoise with dorsal and tail fins and paddle-shaped limbs

• having the back covered with thick bony plates; thought to have walked with a sprawling gait resembling a lizard's

• of or relating to reptiles of the subclass Archosauria

• extinct reptiles including: dinosaurs; plesiosaurs; pterosaurs; ichthyosaurs; thecodonts

• Any member of the Prosauropoda, a group of early herbivorous dinosaurs with a long neck and small head, forelimbs shorter than the hindlimbs, and a very large thumb claw for defense.

• large carnivorous bipedal dinosaur having enormous teeth with knifelike serrations; may have been a scavenger rather than an active predator; later Cretaceous period in North America

• huge quadrupedal herbivorous dinosaur common in North America in the late Jurassic

• A large, carnivorous dinosaur, of genus Allosaurus, that lived in the Jurassic period.