702 
Pachymytilus, 386 
Pachyphyllum, 79 
Pachypoma, 448 
Pachypora, 99 
Pachypteria, 382 
Pachyrhynchus, 333 
Pachyrisma, 377 
Pachystroma, 112 
Pachyteichisma, 59 
Pachyteuthis, 597 
Pachytylodia, 64 
Palaeacis, 95 
Palaeastacus, 664 
Palaeaster, 207 
Paleechinus, 221 
Palaega, 669 
Palaemon, 661 
Palaeoblattina, 683 
Palaeobrissus, 248 
Palaeocampa, 631 
Palaeocardia, 368 
Palaeocardita, 398 
Palaeocaris, 659 
Palaeocarpilius, 666 
Palaeocidaris, 220 
Palaeoclymenia, 519 
Palaeocoma, 207 
Palaeocorbis, 409 
Palaeocorystes, 666 
Palaeocrangon, 659 
Palaeocrania, 311 
Palaeocreusia, 652 
Palaeocrinus, 155 
Palaeocylus, 74 
Palaeocy pris, 646 
Palaeocystites, 154 
Palaeogainmarus, 668 
Palaeogoniatites, 549 
Palaeograpsus, 666 
Palaeolainpas, 242 
Palaeomanon, 50 
Palaeomutela, 374 
Palaeomya, 407 
Palaeonarica, 453 
Palaeonwutilus, 519 
Palaeoneilo, 363 
Palaeoniso, 457 
Palaeopemphix, 659 
Palaeophiura, 203 
Palaeophonus, 679 
Palaeopinna, 369 
Palaeopneustes, 245 
Palaeorchestia, 668 
Palaeosaccus, 55 
Palaeosceptron, 106 
Palaeosolen, 419 
Palaeostella, 207 
Palaeostoma, 245 
Palaeotropus, 248 
Palasterina, 207 
Palasteriscus, 207 
Paleanatina, 362 
Palearca, 365 
Paleschara, 283 
Palingenia, 684 
Palinurina, 663 
Palinurus, 663 
Palliwm, 381 
Paltopleuroceras, 577 
Paludina, 463 
Panda, 495 
Pandora, 390 
Panopaeus, 666 
Panopea, 422 
Paolia, 683 
Paphia, 421 
Papyridea, 412 
Paracardium, 362 
Paraceltites, 553 
Paraceratites, 559 
Paracladiseites, 566 
Paracochloceras, 561 
Paractinoceras, 528 
Paracyathus, 84 
Paracyclas, 407 
Paradoceras, 551 
TEXT-BOOK OF PALAEONTOLOGY 
Paradoxechinus, 232 
Paradoxides, 627 
Paragymnites, 557 
Parajuvavites, 554 
Parakymatites, 556 
Paralampas, 240 
| Paralecanites, 556 
| Paralegoceras, 552 


| Pericosma, 246 
Paralenticeras, 590 
Parallelodon, 364 
Paramelania, 467 
Paramya, 422 
Paranomia, 384 
Paranorites, 556 
Parapachydiscus, 570 
Paraphyllites, 549 
Parapopanoceras, 564 
Paraprolecanites, 563 
Parapronorites, 563 
Paraprosopon, 659 
Parapsiloceras, 574 
Pararea, 363 
Parastarte, 416 
Parastephanites. 558 
Parastrophia, 321 
Parathisbites, 560 
Paratibetites, 560 
Paratornoceras, 551 
Paratropites, 554 
Parazyga, 338 
Parisocrinus, 158 
Parkeria, 110 
Parkinsonia, 583 
Parmacellina, 496 
Purmophorus, 446 
Paroniceras, 575 
Paropsis, 371 
Paryphostoma, 457 
Pasceolus, 67 
Passyia, 411 
Patella, 442 
Patellina, 31 
Paterina, 305 
Paterula, 307 
Patrocardium, 367 
Pattersonia, 55 
Pavonaria, 106 
Pecchiolia, 392 
Pecten, 380 
Pectunculus, 366 
Pedicularia, 473 
Pedina, 230 
Pedinopsis, 230 
Pedioceras, 587 
Peduin, 381 
Peisinoceras, 520 
Pelagia, 264 
Pelanechinus, 226 
Peltarion, 452 
Peltastes, 227 
Peltocaris, 658 
Peltoceras, 582 
Pemphix, 664 
Penaeus, 661 
Peneroplis, 25 
Penuatulites, 106 
Penniretepora, 283 
Pentaceros, 208 
Pentacrinus, 173 
Pentactinella, 339 
Pentagonaster, 2U8 
Pentagonia, 341 
Pentamerella, 322 
Pentameroceras, 531 
Pentamerus, 321 
Pentaphyllum, 76 
Pentastere, 321 
Pentata, 362 
Pentephyllum, 198 
Pentremites, 194 
Pentremitidea, 194 
Pephricaris, 656 
Peregrinella, 325 
Pereiraea, 471 
Pergamidea, 372 { 
Ur? 
Pericyclus, 552 
Periechocrinus, 144 
Peripetoceras, 525 
Peripleurites, 561 
Periploma, 390 
| Periplomya, 389 

Peripneustes, 247 
Peripora, 262 
| Perischodomus, 220 
| Perisphinctes, 581 
| Peristernia, 479 
Perna, 370 
Pernopecten, 380 
Perncstrea, 370 
Peronella, 63 
Peroniceras, 589 
Peronidella, 63 
Peronoceras, 579 
Peronopora, 272 
Persona, 475 
Petalagxis, 78 
Petalia, 685 
Petaloconchus, 466 
Petalophora, 263 
Petalotrypa, 278 
Petenoceras, 524 
Petersia, 472 
Petigopora, 274 
Petraia, 74 
Petraster, 207 
Petricola, 417 
Petrobius, 683 
Pexidella, 340 
Phacites, 32 
Phacoceras, 523 
Phacops, 636 
Phaenopora, 279 
Phaenoschisma, 197 
Phalangiotarbus, 679 
Phanerotinus, 446 
Phanogenia, 175 
Pharciceras, 554 
Pharella, 419 
Pharetrella, 491 
Phasganocaris, 655 
Phasianella, 448 
Phasianus, 448 
Phasis, 498 
Phenacolepas, 446 
Phialocrinus, 162 
Phidolophora, 289 
Philine, 487 
Philis, 410 
Phillipsastraea, 79 
Phillipsia, 631 
Philobrya, 372 
Philocrinus, 160 
Phimocrinus, 136 
Phloioceras, 523 
Phlycticeras, 569 
Pholadella, 388 
Pholadoearis, 658 
Pholadoinya, 389 
Pholas, 423 
Pholidocidaris, 222 
Pholidophyllum, 77 
Pholidops, 311 
Pholidostrophia, 313 
Phormedites, 560 
Phormosella, 55 
Phormosoma, 226 
Phorus, 463 
Phos, 476 
Phragmoceras, 532 
Phragmoteuthis, 599 
Phragmotheca, 491 
Phreatura, 645 
Phricodoceras, 587 
Phrynus, 679 
Phryssonotus, 682 
Phthanocoris, 686 
Phthonia, 361 
Phyllangia, 86 
Phyllobrissus, 241 
Phylloceras, 567 
Phyllocoenia, 90 
Phyllocrinus, 171 
Phyllodictya, 280 
Phyllodocites, 256 
Phyllograptus, 119 
Phyllonotus, 477 
Phyllopora, 283 
Phyloporina, 283 
Phyllosmilia, 89 
Phylloteuthis, 603 
Phymatella, 48 
Phymatoceras, 577 
Phymechinus, 230 
Physa, 493 
Physetocrinus, 142 
Physoearis, 655 
Physodoceras, 582 
Phytogyra, 91 
Pictetia, 588 
Pictonia, 581 
Pileolus, 454 
Pileopsis, 460 
Pileotrypa, 269 
Pileus, 234 
Piloceras, 515 
Pimelites, 579 
Pinacoceras, 561 
Pinacophyllum, 89 
Pinacotrypa, 270 
_ Pinna, 369 
| Pinnacites, 550 

Pinnatopora, 283 
Pinnigena, 369 
rPinnocaris, 658 
Pionocrinus, 143 
Pisanella, 475, 479 
Pisidium, 398 
Pisocrinus, 135 
Pithodea, 456 
Placenta, 384 
Placenticeras, 585 
Placiphorella, 435 
Placites, 561 
Placocoenia, 89 
Placoparia, 634 
Placophoropsis, 435 
Placophyllia, 89 
Placopsilina, 23 
Placosmilia, $9 
Placuna, 384 
Placunanomia, 384 
Placunema, 384 
Placunopsis, 384 
Plaesiomys, 319 
Plagiodon, 378 
Plagioglypta, 432, 
Plagioptychus, 402 
Plagiostoma, 383 
Planaxis, 459 
Planctoceras, 519 
Planetoceras, 523 
Planocephalus, 683 
Planolites, 256 
Planorbella, 489 
Planorbis, 494 
Planorbulina, 30 
Planulina, 30 
Plasmopora, 108 
Platidia, 330 
Platyacra, 450 
| Platybrissus, 245 
Platyceras, 461 
Platychilina, 453 
Platychonia, £2 
Platyelymenia, 548 
Platycrinus, 138 
Platylenticeras, 590 
Platymya, 389 
Platyodon, 421 
Platypleuroceras, 578 
Platyschisma, 446 
Platystoma, 461 
Platystrophia, 319 
Plaxiphora, 435 
Plecanium, 28 
Plecotrema, 493 
Plectambonites, 313 
