Elasmosaurus Was Not a Dinosaur Elasmosaurus was a large marine reptile with an extremely long neck that lived in the ocean 65 million years ago. This group is not a dinosaur group, but is reptilian and belongs to the family group Plesiosauria. This genus had a snake-like neck and large wide body which resembled that […]
Sauropterygia
Plesiosaurus — the First Discovered Marine Reptile
P. dolichodeirus, or Plesiosaurus, was not a dinosaur, but a plesiosaur—a marine reptile (Greek—near to lizard) from the Mesozoic Era of the Early Jurassic period. Plesiosaurus was the first species of its kind to be discovered. Though much has been learned about its anatomy and evolution, there are still many topics of debate over the […]