SciencePlesiosaurs Swam Like Penguins By Using Flippers Underwater Like penguins, prehistoric marine reptiles known as plesiosaurs used their front flippers to zoom through the water. The discovery may end the long-time debate about how this reptile swam underwater, scientists said.by Alyssa Navarro
ScienceHorses and Rhinos Have More in Common than You Think, Ancestor Fossils Discovered in India Suggestby James Maynard