Thrinaxodon, cynodont, sculpture Deinonychus This left lower jaw is

This left lower jaw is 28 inches long

The nature of the limbs and vertebrae clearly indicate a terrestrial animal

This replica Edmontosaurus cervical vertebra was collected as part of a 60% complete skeleton in the Cretaceous

just off of center and at the very bottom of the specimen below

Thrinaxodon, cynodont, sculpture Deinonychus This left lower jaw isThrinaxodon (pronounced thrin AX ah DON) was a cat sized cynodont, an ancestor of the mammals, but not a mammal itself. Thrinaxodon was not a dinosaur. This therapsid lived during the late Triassic period, roughly 240 million years ago. Small holes in the snout bones suggest that it may have had whiskers, a mammalian characteristic. Its teeth were also similar to those of mammals. The skull was about 1. 5 inches long. Fossils have been found in South