28 

 PLESIOSAUEUS, Gomyb. 



Plesiosaurus auLO, Cope. Proceedings Academy Philadelphia, 1872, 



p. 128. 



Niobrara Cretaceous of Kansas. 

 Plesiosaueus occiduuSj Leidy. Ifothosaurus occiduus, Leidy. Proceed. 



Academy Philadelphia, 1870, p. 74 ; Eeport Geol. Survey Territories, 



(4to,) 1873, I, p. 345 ; tab. xv., figs. 11-13. 



Lignite Cretaceous of Moreau E., Dakota. 



PIEATOSAUEUS, Leidy. 



PiRATOSAURUS PLiCATUS, Leidy. Cretaceous Eeptiles of North Amer- 

 ica, p. 29, tab. xix, fig. 8. 

 Cretaceous of the Eed Eiver, Minnesota. 



ELASMOSAUEUS, Cope. 



Elasmosaurus platyurus, Cope. Notes on Geology of Southern 

 Div. Pacific E. E., by J. Leconte. 1868, 68. Extinct Batrachia Eep- 

 tilia N. America, etc. 1869, p. 44. Hayden Geol. Survey Terr's, 

 1870, Wyoming, p. 393. Discosaurus carinatus, Cope. Leconte's notes, 

 1. c. 

 Niobrara Cretaceous of Kansas. 



ISCHYEOSAUEUS, Cope. 



Extinct Batr. Eept. N. America, 1869, p. 38. Ischyrotherium, Leidy. 

 Proceed. Academy Philadelphia, 1856, p. 89. Transac. American Philos. 

 Soc, 1860, p. 150. 

 IsCHYROSAURUS ANTK^uus, Cope, 1. c. Ischi/rotherimn antiquum, Leidy, 



1. c. Trans. Amer. Philos. Soc. Tab. x, figs. 8-17. 



Lignite period between Moreau and Grand Elvers, Nebraska. 



TESTUDINATA. 

 PEOTOSTEGA, Cope. 



Proceedings Am. Philos. Society, 1872, p. 422. 

 PEOTOSTEGA GIGAS, Cope, 1. C. 



From the Niobrara Cretaceous of Kansas. 



TOXOCHELYS, Cope. 



Proceed. Academy Nat. Sciences, Pliiladelpliia, 1873, p. 10. 



ToxocHELYS LATiEEMis, Cope, 1. c. '^. Cynocercus incisus, Cope, I.e., 

 1872, p. 129. Leidy Eeport U. S. Geol. Survey Territories, I, p. 279, 

 tab. xxxvi, figs. 17-21. 

 Niobrara Cretaceous of Kansas. 



CYNOCEECUS, Cope. 



Proceedings Amer. Philos. Soc, 1872, 308. 



Cynocercus incisus, Cope., 1. c. 

 Niobrara Cretaceous of Kansas. 



