Richmond Pliosaur

A near-complete skeleton of a small pliosaur was found near the town of Richmond, on the northern edge of the

Fossil Triangle. Known as the

"Richmond Pliosaur," it is one of the world's best-preserved pliosaurs.

Shown here is an illustration of how a pliosaur might have moved—scientists think it used its flippers to swim like a sea lion.

powerful flippers may have been used to propel the pliosaur through the water as they moved down forcefully

flippers are now raised slightly upward, as the backward push through the water begins

—--Forward—flippers are now fully pushed back and then brought forward, enabling the pliosaur to start the cycle again

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