The newly-discovered species belongs to the mosasaurid genus Carinodens, and was a durophage, adapted for crunching hard-shelled invertebrates. An artist’s impression of a mosasaur. Image credit: Nick Longrich. Carinodens is a extinct genus of Cretaceous mosasaurs known from around the world. These marine lizards measured 2-3 m in length and were unusual in having low, rectangular, compressed teeth. “Early, basal mosasaurids had small, conical,...