1" Globidensins Mosasaur Tooth

Overall, globidensins were medium-sized mosasaurs, with Globidens itself reaching about 6 meters in length. The teeth of Globidens, Carinodens and Igdamanosaurus differ from those of all other mosasaurs in being very robust and globular. Most mosasaur genera have sharp teeth adapted to grab soft and slippery prey like fish and cephalopods. Though some clearly were capable of crushing through the shells of armored prey, none were as specialized as Globidens and its kin, which combined robust and powerful skulls with semispherical teeth capable of crushing through the shells of animals like ammonites, bivalves and small turtles

Mosasaurs are a large marine reptile from the Late Cretaceous period (145.5 and 65.5 million years ago). Their first fossilized remains were discovered in a limestone quarry in the Netherlands in 1764. They were powerful swimmers but preferred to live in shallow inland seas, swimming to the surface to breathe.