CATALOGUE. 



477 



HYPSORHINA Baur. Type H. antiqua Baur. 



Baur, G. 1893 C. Hypsorhina antiqua Baur. 



Baur, G. 1893 C. 



Oligocene (White River); South Dakota. 



TYLOSTEUS Leidy. Type T. ornatus Leidy. 



Leidy, J. 1872 E, p. 40. 



1873 B, p. 285. 



The position of this fossil is doubtful. It is 

 not improbably a portion of the dermal armor 

 of some Dinosaur. 



Tylosteus ornatus Leidy. 

 Leidy, J. 1872 E, p. 40. 



1873 B, pp. 285, 345. pi. xix, fig. 14: fig. 13?. 

 Cretaceous?; Montana? (Head of Missouri 

 River.) 



ACIPRION Cope. Type A. formosum Cope. 



Cope, E. D. 1873 CC, p. 17. 

 1874 B, p. 514. 

 1884 O, p. 776. 



Aciprion formosum Cope. 

 Cope, E. D. 1873 CC, p. 17. 



1874 B, p. 514. 



1884 O, p. 776, pi. Ix, fig. 15. 

 Oligocene (White River); South Dakota. 



DIACIUM Cope. Type D. quinquepedale Cope. 



Cope, E. D. 1873 CC, p. 17. 

 1874 B, p. 514. 

 1884 O, p. 777. 



Diacium quinquepedale Cope. 

 Cope, E. D. 1873 CC, p. 17. 

 1874 B, p. 514. 



1884 O, p. 777, pi. Ix, fig. 20. 

 Oligocene (White River); Colorado. 



CREMASTOSAURUS Cope. Type C. carinicollis Cope. 



Cope, E. D. 1873 CC, p. 18. 

 1874 B, p. 515. 

 1884 O, p. 780. 



Cremastosaurus carinicollis Cope. 



Cope, E. D. 1873 CC, p. 18. 



1874 B, p. 515. (In part.) 

 1884 O, pp. 779, 781, pi. Ix, fig. 16. 

 Oligocene (White River); Colorado. 



PLATYRHACHIS Cope. Type P. coloradoensis Cope. 



Cope, E. D. 1873 CC, p. 19. 

 1874 B, p. 516. 

 1884 O, p. 777. 



Platyrhachis coloradoensis Cope. 

 Cope, E. D. 1873 CC, p. 19. 



1874 B, p. 516. 



1884 O, p. 778, pi. Ix, fig. 17. 

 Oligocene (White River); Colorado. 



Platyrhachis rhambastes Cope. 

 Cope, E. D. 1884 O, p. 779, pi. Jx, fig 18. 



1874 B, p. 516. (Cremastosaurus carinicollis, 



in part.) 

 Oligocene (White River); Colorado. 



Platyrhachis unipedalis Cope. 

 Cope, E. D. 1873 CC, p. 18. (Diacium.) 



1874 B, p. 516. (Cremastosaurus.) 



1884 O, p. 779, pi. Ix, fig. 19. 

 Oligocene (White River); Colorado. 



NAOCEPHALUS Cope. Type N. porrectus Cope. 



Cope, E. D. 1872 M, p. 465. 



1873 E, p. 631. 

 A genus of uncertain affinities. 



Naocephalus porrectus Cope. 

 Cope, E. D. 1872 M, p. 465. 



1873 E, p. 632. 

 Eocene (Bridger); Wyoming. 



