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Temporal range: Upper Cretaceous 86.5–75 mya
Tylosaurus pembinensis 1DB.jpg
"Bruce" T. pembinensis restoration
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Sauropsida
Order: Squamata
Suborder: Scleroglossa
Family: Mosasauridae
Subfamily: Tylosaurinae
Williston, 1895[1]
Genus: Tylosaurus
Cope, 1872

Tylosaurus was an Upper Cretaceous mosasaur. It was a large, predatory marine lizard closely related to modern monitor lizards and to snakes.

In 1918, Charles H. Sternberg found a Tylosaurus, with the remains of a plesiosaur in its stomach.[2] The specimen is currently mounted in the United States National Museum (Smithsonian) and the plesiosaur remains are stored in the collections. Although these important specimens were briefly reported by C.H. Sternberg (1922), the information was lost to science until 2001. This specimen was rediscovered and described by Everhart. It is the basis for the story line in the new (2007) National Geographic IMAX movie - Sea Monsters.[3]

References[change | change source]

  1. Williston, S. W. 1895. New or little-known extinct vertebrates. Kansas University Quarterly 6:95-98.
  2. "Tylosaur food". Oceansofkansas.com. Retrieved 2013-01-28.
  3. Everhart MJ. 2005. Oceans of Kansas: a natural history of the Western Interior Sea. Indiana University Press,