Description
MOSASAUR JAW SECTION Elasmosaur Plesiosaurus mauretanicus Upper Cretaceous Oued Zem, Khouribga, Morocco Elasmosaurus is a genus of plesiosaur, which loosely translates to mean "thin-plate reptile" or "flat-tailed." Though it is often associated with dinosaurs that traveled underwater, they aren't actually a dinosaur – they are an extinct reptile species. They...