Tetracynodon tenuis Patagotitan but detailed anatomical studies demonstrated

but detailed anatomical studies demonstrated sufficient differences to justify its separation into the genus Giraffatitan

shoshonensis "diente destructivo")

Longitud hocico-cola 88 mm

Diabloceratops played an important role as a herbivore

about 75 million years ago

Tetracynodon tenuis Patagotitan but detailed anatomical studies demonstratedTetracynodon tenuis was a small therapsid of the cynodont group that lived during the Late Permian Period and possibly briefly survived the mass extinction event that marked the boundary with the Triassic , approximately 252 million years ago. Its fossils have been found in South Africa, a region that has provided much evidence of the transition from mammal like reptiles to the first mammals. Tetracynodon represents one of the earliest cynodonts and