(pronounced kas-MAT-oh-SAWR-us) Chasmato saurus (formerly known as Proterosuchus) is the earliest-known Proteroschian, a very primitive thecodont that lived during the early Triassic period , about 250 million years ago. This socket-toothed, carnivorous reptile had a low-slung body, long jaws with backwards-facing teeth, a sprawling gait, four shor...
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Chasmatosaurus Formerly known as Proterosuchus, is the earliest-known Proteroschian, a very primitive thecodont that lived during the Early Triassic period. Considered an ancestor of the dinosaurs. Fossils have been found in China and South Africa.
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