Ancient 'Loch Ness Monster' Reptiles Swam Like Penguins

Plesiosaurs, marine reptiles that thrived in the world's seas when dinosaurs ruled the land, swam much like penguins by using their flippers to "fly" underwater, scientists said Thursday, resolving a debate that began nearly two centuries ago. Plesiosaurs had four large flippers, and many had remarkably long necks. They lived from about 200 million years ago to 66 million years ago, disappearing in the same mass extinction that doomed the dinosaurs. Nessie, Scotland's...

© La Voix de l'Amérique - jeudi 17 décembre 2015