530 



INDEX. 



Tillodmitia, ii. 373. 



TiUotheridce, ii. 373. 



Tillotherium, ii. 373, 374. 



Tinoceras, ii. 373. 



Tinoporus, i. 103, 117. 



Titanoviys, ii. 406. 



Titanophis, ii. 199. 



Titanosaurus, ii. 231, 234. 



Titanotherium, ii. 333. 



Tornatella, ii. 36. 



Tornatellidce, ii. 6, 36. 



Tortoises, ii. 196, 197. 



Toxoceras, ii. S3. 



Toxodon, ii. 375, 376. 



Toxodontia, ii. 375. 



Trachyderma, i. 311, 313. 



Tracliynemkke, i. 154. 



Tracks, of Aimelides, i. 317, 320-326. 



Tragoceras, ii. 365. 



Tmgididce, ii. 350, 452, 357. 



Traffulus, ii. 357, 358. 



Trapezium, i. 500. 



Tremabolites, i. 146. 



Tremadictyon, i. 145. 



Trevianotus, ii. 40. 



Trematis, i. 459, 460. 



Trematodiscus, i. 132. 



Trematopora, i. 424, 425. 



Trematosaurus, ii. 184. 



Tretenterata, i. 440. 



Tretoceras, ii. 70. 



Triacnnus, i. 277. 



Triarthrus, i. 356, 368. 



Tricliecidce, ii. 393. 



Trichecodon, ii. 393. 



Tricheciis, ii. 393. 



Trichites, i. 83. 



Tnchotaster, i. 251. 



Trichotropis, ii. 9. 



Triconodon, ii. 284, 292, 293. 



Tridacna, i. 495, 496. 



Tridacnidce, i. 469, 495. 



Trigonellites, ii. 75, 81. 



Trigonia, i. 490. 



Trigoniadce, i. 468, 490. 



Trigonoco.rpon, ii. 448, 449, 450, 460, 



461. 

 Trigonosevius, i. 443. 

 Trilohita, characters of, i. 351-362 ; dis- 



trilnition of, in time, i. 362, 363; 



families of, i. 363-380. 

 Tnlophodon (Mastodon), ii. 368. 

 Trimerella, i. 462. 

 Trimerellidm, i. 440, 462. 

 Tnmerocephalus, i. 368. 

 Trinucleidce, i. 363, 372. 

 Trinucleus, i. 353, 354, 362, 363, 372, 



373. 

 THonycidce, ii. 196, 197. 

 Trionyx, ii. 197. 

 Triplesia, i. 449. 

 Tripoli, i. 23. 



Tristichopterus, ii. 140, 141, 142. 

 Tr/ilo?!,, ii. 9. 

 Torchammina, i. 112. 

 Trochobolus, i. 146. 



Trochoceras, ii. 66, 67. 

 Trochocyathus, i. 190. 

 Trochocystites, i. 290, 292. 

 Trocholites, ii. 68. 

 Trochosmilia, i. 192. 

 Trochotoma, ii. 30. 

 Trochus, ii. 27, 28. 

 Trogonthenum, ii. 409. 

 Trogosus, ii. 374. 

 Tropidaster, i. 252. 

 Troxites, i. 407. 

 Truncatidina, i. 117. 

 Tubicola {Annelida), i. 309-315. 

 Tubiporidce, i. 218. 

 Tubidarida, i. 154. 

 Tubulipom, i. 428, 431. 

 Tubuliporidw, i. 426, 431. 

 Tubalosa, i. 188; characters and distri- 

 bution of, i. 204, 205. 

 Timicata, i. 411, 413. 

 Turbinella, ii. 9. 

 Turhinidw, ii. 5, 26. 

 Turbinolia, i. 189. 

 TurUnolida, i. 189, 190, 211. 

 Twr&o, ii. 26, 27. 

 Turrilepas, i. 338, 339, 340. 

 Turrilites, ii. 59, 75, 84, 85. 

 Turritella, ii. 19, 20. 

 Turritellidcc, ii. 5, 19. 

 Tylodon, ii. 396. 

 Tylopoda, ii. 355. 

 Tylosaurus, ii. 207. 

 Typhis, ii. 9. 

 Typotheriu'iii, ii. 406. 



Uintacrinus, i. 284. 

 Uintatherium, ii. 373. 

 Uintornis, ii. 265. 

 Ullmania, ii. 437, 463. 

 Umbrella, ii. 37. 

 Uncites, i. 446, 447. 

 Unconformability of sti'ata, i. 63-65. 

 Undina, ii. 140. 

 Ungulata, ii. 318, 319. 

 C/Mt'o, i. 491. 

 Unionidce, i. 468, 491. 

 Uraster, i. 245, 247, 251, 252. 

 Urasterella, i. 249, 251. 

 Urocordylus, ii. 181, 185. 

 Urodela, characters of, ii. 174; distri- 

 bution of, in time, ii. 175. 

 Uronemus, ii. 142. 

 Ursidoi, ii. 392, 393. 

 Ursitaxus, ii. 395. 

 Ursus, ii. 394. 

 C7rM5, ii. 368. 

 Uvellidea, i. 106. 



Vaginulina, i. 109, 114. 



Valenciennesia, ii. 45. 



Valvata, ii. 6, 25. 



Valvular pjTamid, of Cj'stideans, i. 288. 



Val-oulina, i. 100, 112. 



Vanessa, i. 408. 



Vanuxemia, i. 488. 



Vegetable kingdom, divisions of, ii. 429. 



