Desmostylus hesperus titanis rex clearly wins

rex clearly wins

Prognathodontines are differentiated from other mosasaurs by their massive jaws and robust teeth

serrated teeth used to tear the flesh of its prey

Its teeth were:

Desmostylus hesperus titanis rex clearly winsDesmostylus hesperus was a semi aquatic marine mammal from the Miocene belonging to Desmostylia, an extinct order of mammals known exclusively from the North Pacific. Unlike sirenians, pinnipeds or cetaceans, desmostylians represented a distinct evolutionary lineage that has completely disappeared. They have traditionally been associated with Tethytheria, the broader evolutionary group that includes sirenians and proboscideans. The generic name means