Mylax, 333. 
Myocaris, 58, 59 
Myoconcha, 367. 
Myoloxylon, go. 
Myophoria, 286, 290, 367. 
Myopsis, 286, 366. 
Myrianites, 35. 
Mpriaphyllites, 182, 191. 
Mpriolepis, 333. 
Mytilites, 364, 765. 
Mytilocaris, 58. 
Mytilus, zo2, ros, 106, 107, 161, 
261, 279, 286, 287, 364, 366, 367. 
Narica, 302, 303. 
Natica, 114, 164, 302, 307, 308, 
370- 
Naticodon, 302. 
Naticopsis, 114, 302, 303. 
Natiria, 303. 
Nautilites, 767, 773. 
Nautillipsites, 767. 
Nautilus, 123, 166, 168, 231, 370, 
FL, 313, 314, 315, 318, 372, 373- 
Nebulipora, 21, 22, 276, 
Necrogammarus, 59. 
Nemacanthus, 324, 33}. 
Nemagraptus, 12. 
Nemaphyllum, 274. 
Nematophyllum, 273, 214, 216. 
Nematoptychius, 333, 740. 
Nemertites, 35, 230. 
Nemopteryx, 740, 375. 
Neolimulus, 59. 
Nephropteris, 785, 186. 
Nereites, 35, 36. 
Nerita, zz0, 114, 164, 303. 
Neseuretus, 59. 
Neuropteridium, 797, 792. 
Neuropteris, 191, 192, 351. 
Nidulites, 2. 
Nileus, 41, 55, 59. 
Niobe, 59. 
Nodosaria, 204. 
Nodosinella, 204. 
Neeggerathia, 733, 180, 191. 
Nonionina, 203, 204. 
Notochlznides, 191. 
Nucula, lol, 702, 103, 104, 107, 161, 
287, 288, 366, 367. 
Nucleospira, 82, 94, 152. 
Nuculana, zoz2, 288. 
Nuculites, 103. 
Numulus, 360. 
Nuttainia, 57, 58, 59, 69. 
Obolella, 78, 80, 82, 83. 
Obolus, 82, 83. 
Oceanus, 168. 
Ochlodus, 334. 
Octillzenus, 55. 
Odontochile, 59, 62, 63, 64. 
Odontopleura, 78, 59. 
Odontopteris, 192. 
Offa, 241. 
Ogygia, 41, 42, 43, 44, 49, 60, 64, 
68. 
Oldhamia, 12. 
INDEX. 
Olenus, 60, 61, 68, 145, 146. 
Ollacrinus, 224, 228. 
Omphalia, 768. 
Omphyma, 16, 17, 22. 
Onchus, 46, 128, 174, 325, 334, 
337- 
Oncoceras, 121, 723, 126, 309. 
Oolina, 203. 
Operculina, 205. 
Ophiderpeton, 345. 
Ophileta, 111, 72, 114, 307. 
Ophiura, 32. 
Oploscolex, 70. 
Oracanthus, 334, 337- 
Orbicella, 98. 
Orbicula, 76, 77, 83, 90, 11, 254, 
255, 257, 300, 76z. 
Orbiculites, 248. 
Orbiculoida, 76. 
Orbiculoidea, 77, 83, 255. 
Oreodus, 334. 
Ormoceras, 127, 123, 309. 
Orodus, 334, 335) 339- 
Orognathus, 335. 
Orthacanthus, 335. 337. 
Orthambonites, 84, 86. 
Orthis, 76, 78, 79, 82, 83, 84, 85, 
86, 87, 88, 93, 94, 95, 96, 97, 98, 
749, 159, If, 152, 153, 157, 254, 
257, 263, 264, 265, 267, 268, 
362. 
Orthisina, 84, 88, 157, 367, 362. 
Orthoceras, 177, 218, 121, 122, 123, 
124, 125, 126, 127, 167, 309, 313, 
315, 316, 317, 778. 
Orthoceratites, 124, 768, 309, 315. 
Orthognathus, 335. 
Orthonota, 104, 105, 106, 107, 108, 
10g, 162. 
Orthonotus, 104. 
Orthosaurus, 345. 
Orthotetes, 257, 267. 
Orthothrix, 157, 268, 367, 362, 363. 
Ortonia, 230. 
Osmunda, I9T. 
Osteolepis, 174. 
Osteoplax, 335. 
Ostracacanthus, 335. 
Otarion, 46, 67. 
Otopteris, 785, 192. 
Ottonis, 27}. 
Pachycrinites, 222. 
Pachyodon, 279, 280, 288. 
Pachysporangium, I. 
Pachytheca, 1. 
Paleacis, 201, 202, 207, 212, 216, 
217. 
Palearea, 704, 108, 109. 
Paleaster, 30, 33. 
Paleasterina, 30, 33. 
Palechinus, 31, 224. 
Palzocarabus, 232,241. 
Paleochorda, I, 36. 
Paleocidaris, 221, 355. 
Palecis, 201. 
Palzocoma, 31. 
Palzocoryne, 206. 
Paleocrangon, 234, 241, 243, 358. 
Paleocrania, go. 
Paleocrinus, 222. 
Paleocyclus, 22. 
Paleodiscus, 31. 
Paleolithus, 8. 
Paleoniscum, 335, 374, 375- 
Paleoniscus, 327, 335, 340. 
Paleophytis, 134, 192. 
Palzopora, 20, 22, 23, 740. 
Paleopteris, 133, 734. 
Paleopyge, 61. 
Paleorbis, 231. 
Palzosmilia, 270. 
Paleospatangus, 224. 
Paleothrissum, 335, 349, 374. 
Paleoxylon, 794. 
Palmacites, 18z, 192, 196, 199. 
Pamphractus, 174, 775. 
Panderia, s5, 56, 61. 
Pandora, 284, 288. 
Parabatrachus, 345. 
Parabolina, 60, 61. 
Paradoxides, 38, 47, 61, 62, 63. 
Paradoxus, 52. 
Parexus, 174. 
Parka, 61, 145. 
Pasceolus, 2. 
Patella, 76, 714, 254, 301, 303, 304, 
308, 369. 
Pecopteris, 180, 18s, 192, 192, 293, 
194. 
Pecten, 159, 253, 261, 270, 271, 272, 
273, 2745 275, 365. 
Pectenites, 253. 
Pectunculus, roz, 102, 103, 108, 
Peltocaris, 57, 62. 
Peltura, 58, 61. 
Pendulocrinus, 26. 
Penneretipora, 72, 147, 247, 358. 
Pentamerus, 88, 89, 92, 95, 153, 157; 
158, 254, 257. 
Pentatrematites, 224, 225. 
Pentephyllum, 224. 
Pentremites, 143, 222, 224, 225, 
Peridiolithus, 9s. 
Periechocrinus, 26, 31. 
Periploma, 368. 
Perischodomus, 225. 
Perna, 275. 
Petalaxis, 216. 
Petalodopsis, 335. 
Petalodus, 326, 335, 336, 337; 339. 
Petalorhyneus, 336. 
Petraia, 23, 138, 740, 141, 354. 
Petrodus, 336. 
Peuce, 194. 
Phacops, 38, 45, 47, 49, 50, 59, 62, 
63, 64, 65, 69, 744, 145, 146. 
Phaneropleuron, 174, 336. 
Phanerosteon, 336. 
Phanerotina, 298. 
Phanerotinus, 298, 304. 
Phasianella, 764, 297, 299. 
Phillipsastrea, 741, 212, 217, 
Phillipsia, 744, 146, 232, 237, 239, 
240, 242. 
Phillipsocrinus, 225. 
| Philomedes, 242. 
Phoderacanthus, 337. 
Pheenicosocrinus, 31, 33. 
Pholadomya, 276, 286. 
Pholiderpeton, 345, 
Pholidogaster, 3.45. 
Pholidops, 76. 
Phragmoceras, 121, 122, 123, 126, 
127, 317. 
Phragmoceratites, 726, 
Phricacanthus, 337. 
Phyllograptus, 13. 
Phyllolepis, 174. 
Phyllopora, 73, 359. 
Phymatifer, 298, 304. 
Physonemus, 334, 336, 337. 
Phytocaris, 47. 
Phytolithus, 794, 199, 200. 
Picea, 194. 
Pileopsis, z10, 163, 294, 295, 303, 
304. 
Piloceras, 227, 126, 309. 
Pinites, 782, 186, 194. 
Pinna, 261, 275, 365. 
Pinnacodus, 337. 
Pinnularia, 194. 
Pisocrinus, 31. 
Pissadendron, 794. 
Pitus, 194, 195. 
Placoparia, 64. 
Placothorax, 175. 
Plagiostoma, 274. 
Planorbis, 297, 304. 
Planulites, 166. 
Plasmopora, 20, 22, 23. 
Platycanthus, 337. 
Platyceras, 162, 294, 304. 
Platycrinites, 227, 222, 225, 226. 
Platycrinus, 31, 142, 143, 222; 
223. 
Platygnathus, 2773, 175. 
Platymya, 277. 
Platynotus, 58, 59. 
Platyostoma, 114. 
Platyschisma, zzz, 174, 116, 295, 
298, 304, 305, 306, 307, 308, 
Platysomus, 321, 328, 337, 
374- 
Platystrophia, 89. 
Plectambonites, 78, 95, 97. 
Plectrodus, 128, 772, 175. 
Plectrolepis, 328, 337. 
Pleiopterus, 774. 
Pleuracanthus, 746, 327, 335, 337) 
338, 349, 341. 
Pleurocystites, 29, 31. 
Pleurodictyum, 141. 
Pleurodus, 338. 
Pleurogomphus, 338. 
Pleurograptus, 4, 5, 12, 13. 
Pleuromya, 286, 366. 
Pleurophorus, z02, z09, 288, 366, 
367. 
Pleurorhyncus, 105, 109, 160, 761, 
162, 287, 288. 
Pleurotoma, 113. 
Pleurotomaria, zz0, 173, 114, I15, 
164, 296, 301, 304, 305; 300, 308, 
379, 371. 
Plutonia, 64. 
3733 
381 
