Eoraptor Skull, model T-Rex The evidence has mostly been

The evidence has mostly been based on that of Turkana Boy discovered in 1984

Archaeocyathid possibly the genus Atikokania sp

Dromaeosaurus seems to have become extinct about 70 million years ago

Because of rodent's adaptability they have become the most successful and abundant group of mammals

Based on tracks and bone specimens it appears that Brachiosaurus only had a small Thumb claw on the forefoot

Eoraptor Skull, model T-Rex The evidence has mostly beenCLASSIFICATION Eoraptor was a saurischian ("lizard hipped") dinosaur, a very primitive theropod, and a member of the infraorder Herrerasauria (which includes Herrerasaurus, Staurikosaurus, Saltopus, and other very early dinosaurs). The type species is Eoraptor lunensis (named by Paul Sereno, Forster, Rogers and Monetta in 1993). WHEN EORAPTOR LIVED Eoraptor lived during the late Triassic period, roughly 228 million years ago. It is one of the oldest