Short Necked Plesiosaur Tooth (Dolichorhynchops?), Kansas Chalk, Cretaceous

0.82" (2.08 cm) Short Necked Plesiosaur Tooth (Dolichorhynchops?) from the Kansas chalk of the Late Cretaceous. About 80 million years old.  The family Polycotylidae is a family of pelsiosaurs that had shorter necks.