TOM MCHUGH / SCIENCE PHOTO LIBRARY TOM MCHUGH / SCIENCE PHOTO LIBRARY
Thalassomedon. Model of a Thalassomedon, a type of long-necked Plesiosaur. Plesiosaurs were marine reptiles from the Mesozoic era (between 225 and 65 million years ago). Many had short tails and long necks, and large paddle-like limbs. Their small heads and sharp teeth were probably useful for snapping up the fish which are thought to have formed their diet.
Model release not required. Property release not required.