Species
Extinct

Mosasaurus impar

nomen dubium, species not entered Mosasaurus
(Leidy 1856)
This taxon is considered nomen dubium, species not entered of the valid taxon Mosasaurus according to the Paleobiology Database. See the page for Mosasaurus
Bibliography
Original description
J. Leidy. 1856. Notice of remains of extinct vertebrated animals discovered by Professor E. Emmons. Proceedings of the Academy of Natural Sciences of Philadelphia 8:255-257