Stylonurus, 68, 146, 147. 
Subclymenia, 777. 
Sulcoretipora, 247, 250. 
Suleuna, 243. 
Sycoceras, 122. 
Sycocrinites, 223, 228. 
Sycocystites, 28. 
Symphysurus, 41. 
Symphytocrinus, 29. 
Synbathocrinites, 223. 
Synbathocrinus, 228. 
Synocladia, 250, 359. 
Syringophyllum, 24, 25, 141. 
Syringopora, 16, 20, 24, 2z2, 273, 
218. 
Syringothyris, 264, 266, 268. 
Syriocrinus, 33. 
Teniaster, 72, 33, 143. 
Teniolopas, 207. 
Tarrasius, 342. 
Taxocrinus, 26, 27, 28, 33, 143, 
223, 227, 228. 
Tellina, 367, 368. 
Tellinites, 707, 709, 367, 368. 
Tellinomya, 102. 
Temnocheilus, 773, 374, 71s, 318. 
Tentaculites, 37, 143, 768. 
Terebra, 715, 163. 
Terebratula, 74, 75, 77, 81, 82, 85, 
88, 99, 91, 92, 93; 98, Ii2, 148, 
149, 150, 153, 14, US, 156, 158, 
251, 252, 253, 257, 261, 262, 263, 
268, 269, 302, 360, 363. 
Terebratulites, 84, 90, 93, 95, LJ, 
156, 157, 158, 360, 361, 362, 363. 
Teredo, 291. 
Tetragonis, 3. 
Tetragraptus, 7, 14. 
INDEX. 
Tetramerocrinites, 229. 
Tetramerocrinus, 33, 229. 
Tetrataxis, 205. 
Textilaria, 204. 
Textularia, 203, 204, 353. 
Thamniscus, 250, 359. 
Thamnograptus, 14. 
Thamnopora, 78, 739, 211. 
Theca, 118, 119, 125, 369, 371. 
Thecia, 22, 23, 25. 
Thecidea, zz. 
Thelodus, 129. 
Thilipsura, 69. 
Thysanocrinus, 32. 
Tigillites, 36. 
Tiresias, 69. 
Tithymalites, 787, 189. 
Tomodus, 342. 
Trachyderma, 37. 
Tragos, 202, 352. 
Trapezium, 282. 
Trematis, 77, 98. 
Trematopora, 77. 
Tretaspis, 69, 70. 
Tretoceras, 122, 123, 125, 127. 
Trichoides, 37. 
Trichomanites, 135, 197. 
Trigonella, go. 
Trigonocarpum, 199, 351. 
Trigonoceras, 227, 777, 318. 
Trigonograptus, 14. 
Trigonotreta, 89, 155, 362, 362, 363. 
Trilobites, 358. 
Trilobus, 63. 
Trimerocephalus, 69, 744, 147. 
Trimerus, 54, 69, 145- 
Trinodus, 39, 40, 69. 
Trinucleus, 40, 60, 69, 70, 146. 
Triplopterus, 776. 
Tripterus, 176, 
Tristichopterus, 176. 
Tristychius, 342. 
Trochammina, 205, 353- 
Trochella, 295, 299, 307. 
Trochilites, 370, 37Z. 
Trochoceras, 127. 
Trochocrinus, 29, 33. 
Trocholites, 722, 723, 127. 
Trochonema, 777, 115, 116. 
Trochurus, 58, 68, 70. 
Trochus, zzz, 112, 174, 115, 116, 
165, 301, 304, 306, 307, 308. 
Tryplasma, 77. 
Tryplesia, 86, 97, 98. 
Tubipora, 79, 25, 217. 
Tubiporites, 79. 
Turbinites, zzz. 
Turbiporites, 208, 278. 
Turbo, zz0, 173, 114, 116, 165, 297, 
304, 308, 371. 
Turbonellina, 307, 308. 
Turbonilla, 769, 370, 372. 
Turbonitella, 308. 
Turbinolia, 79, 22, 740, 141, 207, 
210, 211, 278, 354. 
Turbinolopsis, 23, 740, 141. 
Turrilepas, 70. 
Turritella, rz2, 123, 164, 165, 299, 
302, 307, 308, 372. 
Ullmannia, 350, 351. 
Ulodendron, 182, 188, 790, 196, 200, 
239. 
Umbrella, 307, 308. 
Uncites, 99, 157, 158. 
Ungula, 83. 
Ungulina, 297. 
Unio, 278, 279, 280, 286, 291. 
Uraster, 70, 33. 
Urasterella, 30, 33, 142. 
Urocordylus, 345. 
Uronectes, 247, 243. 
Uronemus, 342. 
Uropteryx, 337, 374. 
Valvulina, 205. 
Vanuxemia, 209. 
Variolaria, 735, 199. 
Venericardia, 759. 
Venerupis, 283, 284, 289, 291. 
Venus, 282, 284, 290, 291, 292. 
Vermetus, 763, 164, 165. 
Vermilia, 231, 356. 
Verticillites, 3, 77, 147. 
Verticillopora, 3, 77, 208, 218, 250. 
Vetacapsula, 200. 
Vincularia, 247, 250. 
Vioa, 2. 
Volkmannia, 783, 184, 200, 
Voltzia, 351. 
Walchia, 200, 351. 
Waldheimia, 78, 268, 363. 
Wardichthys, 343. 
Webbina, 204. 
Woodocrinus, 229. 
Woodwardites, 200. 
Xenacanthus, 377, 343. 
Xylobius, 244. 
Xystrodus, 323, 343. 
Zaphrentis, 25, 218, 219. 
Zenaspis, 769, 176. 
Zethus, 46, 52, 70, 144. 
Zygocrinus, 221, 229. 
383 
