15 



Plesiosauridae zz Plesiosauridae, Cope, P. A. A. A. 



S., xix, 235, 1871 (name only)."* 

 Elas7nosau7ndae = Elasmosauridae, Cope, Tr. A. P. S., 



n. s., xiv, 1869, p. 47."' 



Order ANOMODONTIA. 



(Anomodontia, Owen.) 



Dicynodontidae — Dicynodontidae, Cope, P. A. A. A. 



S., xix, 235, 1871 (name only)."*^ 

 Oudenodontidae = Oudenodontidae, Cope, P. A. A. A. 



S., xix, 235, 1871 (name only)."' 



Order ICHTHYOPTERYGIA. 



Ichthyosaiu'idae zz Ichthyosawidae, Cope, P. A. A. A. 



S., xix, 235, 1871. 



Order EHYNCHOCEPHALIA. 



Trotorosauridae = Protorosauridae, Cope, P. A. A. A. 



'S., xix, 235, 1871 (name only)."' 

 Sphenodontidae = Sphenodontidae, Cope, P. A. A. A. 



S., xix, 235, 1871."'^ 

 Bhynchosauridae = Rhynchosaui^idae, Cope, P. A. A. A. 



S., xix, 235, 1870 (name only).'" 



*'Nothosaurus, Pistoscaurus, Plesiosaurus, Pliosaurus, etc. 



^ Elasmosaurns, Cimoliasaurus, etc. 



^^ Dicyuodoutidae, Owen, Paleontology. 



*' Cyptodontia, Owen, Paleontology. 



^'^Protorosaurus, Meyer (elongate sacrum). 



^9 Hatteriidae, Cope, Proc. Acad. Nat. Sc. Phila., 1864, 225-7. 



*" Rhyncbosaurus, Owen. 



