Riojasaurus incertus

† Riojasaurus incertus was a sauropod dinosaur from Argentina. A herbivorous dinosaur of the Late Triassic, it inhabited the terrestrial ecosystems of this region. Fossil material documents its morphology and provides data on Mesozoic faunal diversity.

Time Period

Triassic Late Mesozoic Era

Riojasaurus incertus 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.