Velociraptors lived in the Cretaceous period towards the end between 75–71 million years ago. They were about the size of a large wild turkey. About 6 feet long from nose to tail tip and about 1.5 feet high at the hip. They are known from Mongolia and south western China. read more
The first mammals evolved near the end of the Triassic Period from the nearly extinct Therapsids. Scientists have some difficulty in distinguishing where exactly the dividing line between Therapsids and early mammals should be drawn. Early mammals of the late Triassic and early Jurassic were very small, rarely more than a few inches in length. read more
The Jurassic period was a time when dinosaurs roamed the Earth, and it began about 199 million years ago! A lot of animals died off during the Triassic period which meant that dinosaurs could rule the Earth over this time. There were heaps of dinosaurs all over the place. read more