HAY.] 



CATALOGUE. 



637 



Zittel, K. A. 1893 B, p. 305, fig. 246. 



Oligocene (White River); South Dakota?. 



References of specimens to this species by 

 writers since the original description may or 

 may not be correct. More than one species may 

 be included. 



Titanotherium trigonoceras (Cope). 

 Cope, E. D. 1873 CC, p. 13. (Symborodon.) 

 1874 B, p. 488. (Symborodon. ) 

 1874 G, pp. 89, 90. (Symborodon trigono- 



ceros.) 



1874 P, p. 28. (Symborodon.) 

 1874 Q, p. 2. (Symborodon.) 

 1887 L, p. 926. (Menops varians=Menodus 

 trigonoceras.) 



Cope, E. D. 1887 N, p. 1065, figs. 29, 30, 31?. (Sym- 

 borodon.) 



1889-C, p. 259, fig. 81. (Symborodon,) 

 1891 A, p. 9. (Symborodon.) 

 Marsh, O. C. 1887 B, p. 328, fig. 9; not fig. 10. (Me- 

 nops varians. ) 



Matthew, W. D. 1899 A, p. 58. 

 Osborn, H. F. 1896 B, p. 180, pi. iii, text figs. 501 

 and 6355 on p. 167; not text figs. 5, 6 (T. trigono- 

 ceras) ; p. 189, pi. iii (T. varians). 

 Scott and Osborn 1887 B, p. 158. (Syn. of Meno- 



dus coloradensis. ) 



Trouessart, K. L. 1898 A, p. 741. (T. trigonoceras. ) 

 Oligocene (White River); Colorado, South 

 Dakota. 



SYMBORODON Cope. Type 8. torvus Cope. 



Cope, E. D. 1873 S, p. 2. 



1873 DD. 



1874 A, p. 108. 

 1874 B, p. 480. 

 1874 G, p. 90. 



1874 K, p. 224. 

 1881 G, p. 397. 

 1884 O, p. 713. 

 1887 L, p. 926. 

 1887 N, p. 1063. 

 1887 S. 



1889 C. 

 1891 A, p. 9. 



Flower, W. H. 1876 B, xiii, p. 327. 

 Flower and Lydekker 1891 A, p. 413. (Syn. of 



Titanotherium. ) 



Leidy, J. 1874 B. (Syn. of Titanotherium.) 

 Marsh, O. C. 1874 A, p. 81. (Syn. of Brontothe- 

 rium. ) 



1875 B, p. 246. (Anisacodon, type A. mon- 

 tanus.) 



1876 C, p. 338 (Megacerops, part; Brontothe- 

 rium, part); p. 339 (Diconodon, to replace 

 Anisacodon Marsh, 1875; preoccupied by 

 Marsh, 1872). 



Nicholson and Lydekker 1898 A, p. 1374. (Syn.? 



of Titanotherium.) 

 Osborn, H. F. 1890 D, p. 513. (Titanotherium, in 



part.) 



1896 B. (Titanotherium, in part.) 

 Scott and Osborn 1887 B, p. 157. (Syn.? of Meno- 



dus.) 



Steinmann and Doderlein 1890 A, p. 778. 

 Trouessart, E. L. 1898 A, p. 740. (Syn. of Titano 



therium.) 



Symborodon acer Cope. 



Cope, E. D. 1873 S. p. 4. (Megaceratops.) 



1873 CC, p. 12 (S. altirostris); p. 13 (S. acer). 



1873 DD. (S. acer, S. altirostris.) 



1874 A, p. 109. 



1874 B, p. 486, pis. v, vi; pi. viii, fig. 1 (S. 



altirostris); p. 488, pi. vii; pi. viii, fig. 3 



(S. acer). 



1874 G, p. 89. (S. acer, S. altirostris.) 

 1887 N, p. 1064, fig. 28; pi. xxxiv, fig. 3 (S. 



acer) ; pi. xxxiii, fig. a; pi, xxxiv, fig. 1 



(S. altirostris). 



Cope, E. D. 1891 A, p. 9. (S. acer, S. altirostris.) 

 Hatcher, J. B. 1893 B, p. 219, fig. 1. (Titanothe- 

 rium.) 



Matthew, W. D. 1899 A, p. 58. (Titanotherium.) 

 Osborn, H. F. 1896 B, pp. 178, 179, pi. iv, and text 



figs. 3 A, 4. (Titanotherium. ) 

 Roger, O. 1896 A, p. 195. (Titanotherium acer, 



T. altirostris.) 

 Trouessart, E. L. 1898 A, p. 743. 



Oligocene (White River) ; Colorado, Nebras- 

 ka, South Dakota, Canada. 



Symborodon moiitanus (Marsh). 

 Marsh, 0. C. 1875 B, p. 246. (Anisacodon.) 

 King, C. 1878 A, p. 412. (Diconodon.) 

 Marsh, O. C. 1876 C, p. 339. (Diconodon.) 

 Matthew, W. D. 1899 A, p. 58. (Titanotherium.) 

 Osborn, H. F. 1896 B, p. 183. (Titanotherium.) 

 Roger, O. 18% A, p. 195. (Titanotherium.) 

 Trouessart, E. L. 1898 A, p. 742. (Titanotherium.) 

 Oligocene (White River); South Dakota. 



Symborodon torvus Cope. 



Cope, E. D. 1873 S, p. 2. (S. torrus, errore typog.) 



1873 CC, p. 14. 



1874 A, p. 108. 



1874 B, p. 485, pi. ii, fig. 1; pis. iii, iv; pi. 



vii!, fig. 2. (S. bucco.) 

 1874 G. 

 1887 N, p. 1063, pi. xxxiii, fig. 6; pi. xxxiv, 



fig. 2. (S. bucco.) 



1891 A, pp. 9, 11. (S. bucco, S. proutii.) 



Matthew, W. D. 1899 A, p. 58. (Titanotherium.) 



Osborn, H. F. 18% B, p. 176, pi. iii; not text figs. 



2, 3 (Titanotherium torvum); pp. 167, figure; p. 



179, pi. iii (T. bucco). 



1898 Q, p. 9. (Menodus.) 

 Roger, 0. 18% A, p. 195. (Titanotherium.) 

 Trouessart, E. L. 1898 A, p. 742. (Syn. of Titano- 

 therium bucco. ) 



Woodward, A. S. 1898 B, p. 331, fig. 190. (Menodus.) 

 Oligocene (White River); Colorado, South 

 Dakota, Nebraska. 



