Superfamily
Extinct

Cryptocleidoidea

replaced by Cryptoclidia
Williston 1925
This taxon is considered replaced by of the valid taxon Cryptoclidia according to the Paleobiology Database. See the page for Cryptoclidia
Bibliography
Original description
F. R. O'Keefe. 2001. A cladistic analysis and taxonomic revision of the Plesiosauria (Reptilia: Sauropterygia). Acta Zoologica Fennica 213:1-63