From Wikipedia, the free encyclopedia
Illustration of a fossil Pleurosternon shell ... that, together with Platychelys , Pleurosternon fossil genera with characteristics of both modern turtle suborders ?
...that Castorocauda lutrasimilis mammal relative that looked like an otter with a beaver 's tail, evolved a semi-aquatic lifestyle 110 million years earlier than any other mammal-like animal?
... that Xinjiangtitan sauropod dinosaur from Xinjiang in China?
... that the discovery of the fossil of Shenshou Tiaojishan Formation , pushed the origin of mammals back to the Late Triassic , 220 million to 200 million years ago?
... that Calsoyasuchus valleyceps crocodile relative from the Early Jurassic , has a deep groove in its skull from which its species name , "valley head", derives?
