Genus
Valid Extinct

Plesiotylosaurus

Camp 1942

Plesiotylosaurus, meaning "near Tylosaurus", is an extinct genus of marine lizard belonging to the mosasaur family. It is classified as part of the Mosasaurinae subfamily, alongside genera like Mosasaurus and Prognathodon. The genus contains one species, Plesiotylosaurus crassidens, recovered from deposits of Middle Maastrichtian age in the Moreno Formation in California.

Temporal range
Triassic
Jurassic
Cretaceous
Paleogene
Neogene
252 201 145 66 0 Ma
PBDB occurrences
2
Group
Mosasaures
Carnivore aquatic Terrestrial
Plesiotylosaurus
click to enlarge
Holotype skull of Plesiotylosaurus crassidens (LACM 2759) on display at the Natural History Museum of Los Angeles County. © Jonathan Chen · CC BY-SA 4.0 · Wikimedia
PBDB ↗ Wikipedia ↗
Classification
Mosasauridae Family
›
Mosasaurinae Subfamily
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Plesiotylosaurus Genus
Fossil sites 2 geolocated sites
Distribution
Top countries
🇺🇸 United States
2
Geological formations
Moreno
2
Temporal distribution
Maastrichtian (72.2–66 Ma)
2
Species (1)
Plesiotylosaurus crassidens 72 Ma
Images 1
Bibliography
Original description
C. L. Camp. 1942. California mosasaurs. Memoirs of the University of California 13(1):1-68
Bibliography (2)
J. Lindgren. 2009. Cranial osteology of the giant mosasaur Plesiotylosaurus (Squamata, Mosasauridae). Journal of Paleontology 83(3):448-456 DOI ↗
C. L. Camp. 1942. California mosasaurs. Memoirs of the University of California 13(1):1-68