318 



FOSSIL VERTEBRATA OF NORTH AMERICA. 



[BULL. 179. 



Ptychodus mammillaris Agassiz. 



Agassk, L. 1843 B (183ft), Fcuill'., p. 51. 



1843 B (1839), iii, p. 151, pi. xxv 6, figs. 11-20 

 (P. mammillaris); p. 154, pi. xxv 6, figs. 3, 

 5 (P. decurrens); p. 155, pi. xxv 6, figs. 9, 

 10 (P. altior). 

 Cope, E. D, 1875 E, p. 294. 

 Davis, J. W. 1890 A, p. 378, pi. xxxviii. 

 De Kay, J. E. 1842 B, p. 386. 



Dixon, F. 1850 A, p. 361, pi. xxx, fig. 6; pi. xxxi, 

 fig. 4. 



1878 A, p. 390, pi. xxx, fig. 6; pi. xxxi, fig. 4. 

 Fritsch, A. 1878 A, p. 14, text fig. 33. 

 Giebel, C. G. 1848 A, p. 333. 

 Kiprijanoff , V. 1852 A, p. 487, pi. xii, fig. 3; pi. xiii, 



fig. 3. 



Pictet, F. J. 1854 A, p. 265, pi. xxviii, fig. 27. 

 Quenstedt, F. A. 1852 A, p. 181. 



1885 A, p. 282, pi. xxi, figs. 61, 62. (P de- 

 currens. ) 



Reuss, A. E. 1846 A, p. 2, pi. ii, figs. 11-13. 

 Sauvage, H. E. 1870 A, p. 16, figs. 86-89. 

 Woodward, A. S. 1885 B, p. 109, fig. 81. 



1889 D, p. 133. 



Cretaceous; Europe, Delaware. 

 For additional citations of literature bearing 

 on European specimens, see Woodward, A. S., 

 1889 D, p. 133. 



Ptychodus martini Willist. 

 WiUiston, S. W. 1900 A, p. 32, pi. x. 



1900 B, p. 240, pi. xxviii. 

 Cretaceous (Niobrara); Kansas. 



Ptychodus occidentalis Leidy. 

 Leidy J. 1868 H, p. 207. 

 Cope, E. D. 1874 C, p. 48. 



1875 E, p. 294. 

 Leidy, J. 1873 E, pp. 298, 352, pis. xvii, figs. 7, 8; 



pi. xviii, figs. 15-18. 



Williston, S. W. 1900 A, p. 33, pi. xi, fig. 4; pi. xii, 

 fig. 13. 



1900 B, p. 242, pi. xxix, fig. 4; pi. xxx, fig. 13. 

 Woodward, A. S. 1889 D, p. 151. 

 Cretaceous (Niobrara); Kansas. 



Ptychodus papillosus Cope. 



Cope, E. D. 1875 E, p. 294. 



1875 F, p. 63. 

 Cretaceous; Colorado. 



Ptychodus parvulus Whiteaves. 

 Whiteaves, J. F. 1889 B, p. 191, pi. xxvi, figs. 5 a, 

 b, c. 

 Cretaceous (Niobrara); Manitoba. 



Ptychodus polygyrus Agassiz. 

 Agassiz, L. 1843 B (1835), Feuill., p. 55. 

 Agassiz, L., in Buckland, W. 1837 A, pi. xxxvii/. 



(No description). 

 Agassiz, L. 1843 B (1839) B, iii, p. 156, pi. xxv, figs. 



4-11; pi. 'xxv b, figs. 21-23. 

 Cope, E. D. 1874 C, p. 48. 



1875 E, p. 294. 



Dixon, F. 1850 A, p. 363, pi. xxx, fig. 9; pi. xxxi, fig. 

 10 (P. polygyrus); p. xii, pi. xxx, figs. 1, 2 (P. 

 latissimus). 



1878 A, p. 391, pi. xxx, figs. 1, 2 (P. latissi- 

 mus); p. 392, pi. xxx, fig. 9; pi. xxi, fig. 10 

 (P. polygyrus). 



Fritsch, A. 1878 A, p. 14, fig. 35. (P. polygirus.) 

 Gibbes, R. W. 1850 A. 



1850 G, pi. 42, figs. 5, 6. 

 Giebel, C. G. 1848 A, p. 333. 

 Kiprijanoff, V. 1852 A, p. 494, pi. xiii, fig. 6. 

 Leidy, J. 1868 H, p. 208. 



1873 B, p. 352. 



Mackie, 8. J. 1863 B, pi. ix. 



Williston, S. W. 1900 A, p. 31, pi. xi, fig. 9; pi. x, 

 fig. 14. 



1900 B, p. 240, pi. xxix, fig. 9; pi. xxx, fig. 14. 

 Woodward, A. 8. 1885 B, p. 109, fig. 82. 

 1889 D, p. 143. 

 1898 B, p. 52, fig. 41. 

 Cretaceous; Alabama, Kansas. 



Ptychodus whipplei Marcou. 

 Marcou, J. 1858 A, p. 33, pi. i, figs. 4, 4. 

 Cope, E. D. 1874 C, p. 48. (P. whippleyi.) 

 1875 E, p. 294. (P. whippleyi.) 

 1875 F, p. 63. (P. whippleyi.) 

 Leidy, J. 1873 B, pp. 300, 352, pi. xviii, figs. 19, 20. 



(P. whippleyi.) 

 Newberry, J. S. 1876 A, p. 137, pi. iii, figs. 2-2/. (P. 



whippleyi.) 

 Osborn, Scott and Speir 1878 A, p. 106. (P. 



whippleyi.) 

 Williston, S. W. 1900 A, p. 33, pi. xi, figs. 10-15. 



1900 B, p. 243, pi. xxix, figs. 10-15. (P. 



whippleyi.) 



Woodward, A. S. 1889 D, p. 152. ( P. whippleyi. ) 

 Cretaceous (Niobrara); Kansas, Colorado, 

 New Mexico. 



Ptychodus sp. indet. 



Williston, S. W. 1900 A, p. 34, pi. xi, figs. 2, 3, pi. 

 xiii, fig. 53. 



1900 B, p. 243, pi. xxix, figs. 2,13; pi. xxxi, 



fig. 53. 

 Cretaceous (Benton) ; Kansas 



DASYATID^E. 



Jordan and Evermann 1896 A, p. 79. 



Unless otherwise stated, the authors below 



cited refer to this family under the name 



Trygonidff: 



Dumeril, A. 1865 A, p. 578. (Trygones.) 

 Gegenbaur, C. 1865 B. 

 Gill, T. 1893 A, p. 130. (Dasybatidae.) 



Giinther, A. 1870 A, p. 471. 



1880 A, p. 342. 



1881 A, p. 686. 

 Hasse, C. 1878 A, p. 169. 



1879 A, p. 47. 



1882 A, p. 136. 

 Haswell, W. A. 1884 A, p. 117. 



