388 BRITISH FOSSTO? VERTEBRA TA. 
TRICONODON (con/inuwed)— a 
occisor, Owen. v. Triconodon ferox. 
sp., R. Owen, Brit. Mesoz. Mamm. (Pal. Soc., 1871), pp. 62, 63, 
pl. in, f. 25, 16; 20, 21, pl. iv, f. 5,6; R. Lydekker, Cat. Foss. 
Mamm. B. M., pt. v, 1887, p. 263. 
Loc. M. Purbeck ; Durdlestone Bay. [{Mandib. rami; Brit. 
Mus. ]} 
TRILOPHODON, Falconer. v. Mastodon. 
TROGONTHERIUM, G. Fischer de Waldheim, Mém. Soc. 
Imp. Nat. Moscou, vol. ii, 1809, p. 250. 
cuvieri, Cuvier (? ex Fischer, MS.), Ossem. Fossiles, ed. 2, vol. v, 
pt. i, 1823, p. 59; R. Owen, Brit. Foss. Mamm., 1846, p. 184, 
woodcuts 71-73, and Geol. Mag., vol. vi, 1869, p. 49, pl. iii, 
woodcuts 1-4; J. Morris, Cat. Brit. Foss., 1854, p. 362; 
E. T. Newton, Geol. Mag. [2] vol. viii, 1881, p. 256, and 
Vert. Forest Bed (Mem. Geol. Surv., 1882), p. 65, pl. x1, 
f. 1-20; R. Lydekker, Cat. Foss. Mamm. B. M., pt. i, 1885, 
p. 216. 
Trogontherium, G. Fischer de Waldheim, Mém. Soc. Imp. Nat. 
Moscou, vol. ii, 1809, p. 250; A. Savin, Proc. Norwich Geol. 
Soc., vol. 1 (1878), p. 27. 
Castor trogontherium, Cuvier, Ossem. Fossiles, ed. 1, vol. v, 
pt. 1, 1823, p. 59. 
Loc. Norwich Crag; Thorpe. [Portion of femur; Brit. Mus.| 
Forest Bed ; Bacton, Cromer, Kessingland, Mundesley, 
W. Runton, Walker’s Cliff. [Various bones and teeth ; 
Brit. Mus. and Mus. Pract. Geol.) T. 
TURSIOPS, P. Gervais, Hist. Nat. Mamm., vol. 11, 1855, p. 323. 
?tursio (Bonnaterre), R. Lydekker, Cat. Foss. Mamm. B. M., pt. v, 
1887, p. 84. 
Delphinus tursio, Bonnaterre, Encycl. Méthod. (Cétologie), 
1789, p. 21. 
Loc. Pleist.; Grays, Essex. [Lumbar vertebra; Brit. Mus.| 
sp., R. Lydekker, Cat. Foss. Mamm. B. M., pt. v, 1887, p. 84. 
Loc. White Crag; Ramsholt. [Caudal vertebra; Brit. Mus, 
no. 35042 a.| 
URSUS, Linneus, Syst. Nat., ed. 12, vol. i, 1766, p. 69 ; H. Falconer, 
Palzont. Mem., vol. ii, 1868, p. 466. 
arctoideus, Blumenbach. wv. Ursus spelzeus. 
arctos, Linnzeus, Syst. Nat., ed. 12, vol. i, 1766, p. 69 ; R. Owen, 
Rep. Brit. Assoc., 1842 (1843), p. 69, and Brit. Foss. Mamm., 
1846, p.77, woodcut 24, and in R. Ball, Proc. Roy. Irish Acad., 
vol. iv (1849), p. 416; J. Morris, Cat. Brit. Foss., 1854, 
p. 362; W. R. Wilde, Proc. Roy. Irish Acad., vol. vii, 1859, 
