Tylosaurus
Tylosaurus: Research Database Mosasauridae (Tylosaurinae) · Late Cretaceous (~82-66 MYA) · Western Interior Seaway, North America Research Note: Tylosaurus was one of the largest mosasaurs — a group of giant marine reptiles that dominated the Cretaceous seas. As a tylosaurine mosasaur, it lacked the bony scales (osteoderms) of some other mosasaurs and was a dominant … Read more