Species
Extinct

Thalassonomosaurus nobilis

nomen dubium, species not entered Elasmosauridae
(Williston 1906)
This taxon is considered nomen dubium, species not entered of the valid taxon Elasmosauridae according to the Paleobiology Database. See the page for Elasmosauridae
Bibliography
Original description
S. W. Williston. 1906. North American plesiosaurs: Elasmosaurus, Cimoliasaurus, and Polycotylus. The American Journal of Science, series 4 21:221-236 DOI ↗