Sea reptile fossil gives clues to life in ancient oceans
(World News Science)

The plesiosaur has been named Rhaeticosaurus mertensi. Growth marks in its bones suggest the sea creature was a juvenile, grew very quickly and was warm-blooded. By being warm-blooded, plesiosaurs were able to roam the open seas in late Triassic times. ``Warm-bloodedness probably was the key to both...