Keichousaurus hui, marine reptile Mother & Child Pteranodon the Messel Pit was declared

the Messel Pit was declared a World Heritage site by UNESCO

and MOR 403

Some Diplomystus fossils have been found that date back to the Late Cretaceous Period

Wyoming & Montana

Keichousaurus hui, marine reptile Mother & Child Pteranodon the Messel Pit was declaredKeichousaurus hui was a semi aquatic reptile from Triassic China. They are believed to have lived in a marshy environment. Due to a robust ulna, it is believed that they were able to make their way onto land. They are considered members of the Pachypleurosauridae, which also included its contemporary the Nothosauridae. The genus name, Keichousaurus, is derived from the location where it was first found in 1957, Keichou Province. Pachypleurosaurs are