This is one of my favourite fossils. It's an extremely unusually shaped tooth from the very rare marine reptile Globidens aegyptiacus. A 20 foot long mosasaur from the Late Cretaceous (about 100 million years ago). The generic name Globidens means globe tooth. This particular specimen is a back tooth (facing left) and it was found in Morocco. Members of this fascinating genus have also been found in North America.
It's teeth were blunt and bulbous, highly specialised for crushing the hard shells of turtles, clams and ammonites. The enamel was wrinkled to provide a better grip on its armoured prey and the teeth were shallow rooted as the biting pressure is straight down.
Take a look at this link for more information on Globidens.
Bruce
