Species
Extinct

Spondylosaurus frearsi

nomen dubium, species not entered Thalassophonea
Fischer de Waldheim 1845
This taxon is considered nomen dubium, species not entered of the valid taxon Thalassophonea according to the Paleobiology Database. See the page for Thalassophonea
Bibliography
Original description
L. B. Tarlo. 1960. A review of Upper Jurassic pliosaurs. Bulletin of the British Museum (Natural History), Geology Series 14(5):147-189