Reptilia - Sauropterygia - Cryptoclididae
Alternative spellings: Cryptocleidus, Muraenosaurus (Cryptoclidus)
Invalid subtaxa: Apractocleidus Smellie 1915 [objective synonym], Cimoliosaurus oxoniensis Phillips 1871 [nomen dubium], Cryptocleidus oxoniensis Phillips 1871 [nomen dubium], Cryptoclidus oxoniensis Phillips 1871 [nomen dubium], Cryptoclidus vignalensis Torre and Cuervo 1939 [nomen dubium], Muraenosaurus oxoniensis Phillips 1871 [nomen dubium], Plesiosaurus oxfordiensis Seeley 1869 [nomen nudum], Plesiosaurus oxoniensis Phillips 1871 [nomen dubium]
Full reference: H. G. Seeley. 1892. The Nature of the Shoulder Girdle and Clavicular Arch in Sauropterygia. Proceedings of the Royal Society of London 51:119-151
Parent taxon: Cryptoclididae according to R. B. J. Benson and P. S. Druckenmiller 2013
Sister taxa: Abyssosaurus, Colymbosaurus, Djupedalia, Kimmerosaurus, Muraenosaurus, Pantosaurus, Picrocleidus, Spitrasaurus, Tatenectes, Tricleidus, Vinialesaurus
Subtaxa: Cryptoclidus eurymerus, Cryptoclidus richardsoni
Type: Cryptoclidus eurymerus
Ecology: aquatic carnivore