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706 INDEX. Palaeontology of the Arenig rocks, 63 ■ Bagshot beds, Middle, 617 Cambrian rocks, Lowest, 35 Caradoc, 82 Carboniferous, 276 Chalk, 554 Coralline, 467 Cornbrash, 437 —— Cretaceous, 581 Devonian, 198 Eocene, 599 Forest marble, 436 Fuller’s earth, 422 Gault, 545, 549 Greensand, Upper, 553 Jurassic, 354, 477, 485 Kellaway’s rock, 446 Kimmeridge clay, 475 Lias, 362 Llandeilo rocks, 73 Llandovery, Lower, 95 Upper, 102 Lingula flags, Lower, 48 Upper, 50 London clay, 610, 611 Ludlow rocks, 131 Menevian, 43 Miocene, 646, 6491 Neocomian, 531, 537 Oligocene, 623 Oolite, Great, 429 Inferior, 417 Oxford clay, 447 Permian rocks, 316 Pleiocene, 655, 661| Portland rocks, 484 Punfield formation, 523 Purbeck, 507 Rhtic, 342, 344 Tremadoc, Lower, 54 Upper, 55 Triassic, 333, 336 Wenlock, 115 Palophis, 614, 643 Palaeophytis, 2953 Palaeopteris, 183, 206 Palseopygse, 39, 146 Palosaurus, 333, 347 Palseosiron, 317 Palospinax, 500 Palotheres, 600 Palotherium, 600, 644 Palozamia, 354, 490 Palaeozoic land-surface, 327 Palaeozoic strata, Lower, 14 Middle, 13 Upper, 13; sequence of con ¬ ditions in, 313 Paheozoic time, 5 Paleryx, 643 Palinurina, 494 Palinurinus, 589 Palmacites, 295, 617, 634 Paloplotherium, 600, 644 Paludestrina, 658, 671 Paludina, 448, 510, 528, 640, 671, 690 limestone, 523 marble, 523 Pamphractus, 205 Pandora, 301, 655, 670 Pangolis, 646 Panopsea, 497. 522, 591, 639, 670, 689 Panoporidium, 509 Parabatrachus, 291, 305 Parabolina, 47, 146 Paracyathus, 612, 635 Paracypris, 668 Paradoxides, 29, 146 Paradoxidian, 40 Paradoxostoma, 668 Parasmilia, 586 Parasuchia, 433 Parexus, 163, 211 Paris basin, 574 625 Parka 135, 146, 208 Park er ia, 585 Parkfield area, 240, 241 Parkinsoni bank, 352 Parrot coal, 246, 247 Parrotia, 664 Passage beds (tile - stones), 130 191; Kimmeridge clay, 473 ’ Paste rock (Sedgwick), 107 Patella, 88, 149, 346, 408, 498, 592 640, 671, 690 Patellina, 585, Patinella, 669 Patula, 640 Pea grit, 408 Pecopteris, 170, 295, 415, 480, 633 Pecten 336, 346, 496, 5x0, 590, 638, 009, 689 Pecten seams, 388 Pectinaria, 688 Festunculus, 497, 544, 591, 639,670, Pedicularis, 687 Pedina, 431, 493 Pedinopsis, 587 Pedipes, 640 Pedwardine, 52 Peebles limestone, 78, 89 Pelagic Pteropoda, 40 Pelagosaurus, 433 Pelecypoda, development of 6 (see under Palamitology and Tables oj Organic Heinains) Carboniferous, 285 Jurassic, 356 Pelicanus, 690 Pelobatochelys, 476, 502 Pelorosaurus, 522, 528 Peltastes, 587 Peltocaris, 74, 146 Peltura, 51, 146 Penus, 494 Penarth beds, 337, 338; sequence of, 341 Penllergare series, 238 Penmorfa, 55 Pennant series, 238 Pennystone ironstone, 233 Penrhyn sandstones, 46 Pentacrinus, 359, 369, 493, 588, 636 Pentalophodon, 667 Pentamerus, 90, 147, 208 Pentamerus beds, 77, 100 Pentamerus Knightii limestone, 123; Upper limestone, 123, 130 Pentephyllum, 297 Pentland Hills, 131 Pentremites, 86, 201, 207, 297 Pentre Voelas, 109 Pen-y-bryn, 46 Pen-y-craig, 93 Penyghent section at, 215, 216 Pen-y-llan, 101 Peplosmilia, 586 Peramus, 358, 508, 511 Peraspalax, 358, 508, 511 Perea, 690 Percostoma, 643 Perdix, 690 Peribos, 667 Periechocrinus, 144 Periodus, 613, 642 Periploma, 591 Perischoechinid, 102 Perischodomus, 103, 297 Perisphinctes, 485 Perkins Beech, 63 Perlastes, 358, 508, 511 Permian Period, 7, 13 Permian Strata, 306; general character,306; petrological cha- racters, 307; Permo-carbonifer- ous, 306; probably of fresh water origin, 307; types of sys tem, 306, 307, 311, 315; Lower Sandstones, 307; Magnesian Limestone, 309; characteristic fossils, 309; sequence of strata, 310, 319; deposition of, 313; coal under, 272; development in Britain, 313; associated Igne ous rocks, 315; foreign correla tion, 310, 318 Paleontology, 316; Table of Organic Remains, 320 Permo-Carboniferous strata, 306 Perna, 283, 355, 496, 510, 528, 591 Peronella, 431, 491, 585 Persea, 666 Petalaxis, 296 Petalodopsis, 304 Petalodus, 304 Petalopora, 589 Petalorhynchus, 304 Petherwin, 181 Petherwin beds, 194 fauna, 175 Petraia, 67, 143, 207 Petricola, 591 Petrodus, 304 Petworth marble, 523 Peuce, 295, 490, 634 Pfalz-Saarbriicken coal basin, 261 Phacodus, 595 Phacops, 62, 146, 208 Phalacrocorax, 690 Phalacrus, 642 Phaneropleuron, 166, 205, 211, 304 Phanerosteon, 304 Phanerotinus, 302 Pharetrospongia, 585 Phascolomys, 435 Phascolotherium, 357, 502 Phasganus, 642 Phasianella, 414, 454, 498, 544, 592, 640, 690 Phegopteris, 633 Phillips, Professor J., 167, 221, * 389. 434, 481 Phillipsia, 170, 208 Phillipsocrinus, 297 Philomedes, 298 Phlebopteris, 354, 489 Phlyctisoma, 589 Phoca, 659, 672, 691 Phocna, 655, 672, 691 Phoderacanthus, 304 Phnicites, 619 Pholadidea, 473, 497, 591, 670 Pholadomya, 354, 387, 485, 497, 528, 591, 639, 670 Pholas, 497, 612, 639, 670, 689 Pholiderpeton, 291, 305 Pholidocladia, 583 Pholidogaster, 291, 305 Pholidophorus, 347, 355, 368, 500, 510 Phorus, 613, 617, 640 Phragmites, 635 Phragmoceras, 105, 149, 302 Phricacanthus, 304 Phryganea, 509 Phryganidium, 509 Phyllodus, 600, 614, 642, 671 Phyllograptus, 29, 143 Phyllolepis, 205, 211, 304 Phyllopoda, 146, 208 e Phyllopora, 322 Phylloseris, 492 Phymaplectia, 583 Phymatella, 583 Phymatodes, 611 Physa, 510, 690 Physeter, 672, 691 Physonemus, 304 Phytosaurus, 336, 528 Picea, 295 Pickwell Down, 167, 168; sand stones, 171, 185, 188, 189, 193 Piesberg coal-field, 262 Pileolus, 420, 498, Pileopsis, 592 Piloceras, 75, 149 Pilsen coal basin, 263