Asterodermus platypterus, stingray Troodon Crocodiles are the only surviving

Crocodiles are the only surviving members of the Superorder Archosauria which included dinosaurs and pterasaurs

Charnia is the genus name given to a frond-like Precambrian lifeform with segmented ridges branching alternately to the right and left from a zig-zag medial suture

average between one and three inches in length and have an elliptical

Paracytalocrinus hamitensis

which often had extremely long canines which hung out of their mouths

Asterodermus platypterus, stingray Troodon Crocodiles are the only survivingAsterodermus platypterus was a ray species that lived during the Jurassic period (200 145 million years ago). This ray shared the seas with Ichthyosarus and Plesiosaurs. Fossils of Asterodermus have been found in Britain, France, and Germany. Asterodermus is classified in the family Rhinobatidae. Living members of this family are often called guitarfishes. The original of this specimen was found in the Jurassic beds of the Solenhofen Limestone,