15 



Plesiosauridae ^ Plesiosauridae, Cope, P. A. A. A. 



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

 Elasmosauridae — Elasmosawidae, Cope, Tr. A. P. S., 



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



Order AI^OMODONTIA. 



(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 ICHTHYOPTEEYGIA. 



Ichthyosauridae z=z Ichthyosauridde, Cope, P. A. A. A. 



S., xix, 235, 1871. 



Order HHYNCHOCEPHALIA. 



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



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

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



S., xix, 235, 1871."' 

 Phynchosauridae — Bhynchosauridae, Cope, P. A. A. A. 



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



^4 Nothosaurus, Pistosaurus, Plesiosaurus, Pliosaiirus, etc. 



<5 Elasmosaurus, Cimoliasaurus, etc. 



^^ Dicynodontidae, Owen, Paleontology. 



^'' Cyptodontia, Owen, Paleontology. 



^'^ Protorosaurus, Meyer (elongate sacrum). 



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



^0 Ehyucbosaurus, Owen. 



