Coloradisaurus brevis

† A Late Triassic sauropodomorph from the Los Colorados Formation of La Rioja Province, Argentina, Coloradisaurus brevis was a small prosauropod-grade dinosaur. Among the last sauropodomorphs of the Triassic, it helps document the transition from bipedal prosauropod body plans toward the fully quadrupedal, giant sauropod form that would dominate the Jurassic.

Time Period

Triassic Late Mesozoic Era

Coloradisaurus brevis lived during the Triassic Late period of the Mesozoic Era, approximately 237.0 to 201.4 million years ago.

The first true dinosaurs appeared during the late Triassic, including early theropods like Eoraptor and Herrerasaurus. Dinosaurs were still small and not yet dominant. The period ended with the Triassic-Jurassic extinction event.