Elasmosaurus belongs to the family of plesiosaur dinosaur which existed during the Campanian age of late cretaceous period, over 80.5 million years ago. The dinosaur measures about 14m in length and over 2.2 tons in weight. It possesses a flat skull with immediate low and long neck spine.

Elasmosaurus 1

Elasmosaurus 2

Elasmosaurus 3