824 



Aiini-ara, .117 

 Aniipli.'i. ■■'•>'■> 

 Aiinpldcnas, f>06 

 Aiioploplioia, 452 

 AiioplotlH'Ca, 41() 

 Anuptvcliia, 537 

 Antalis, 50i» 

 Antedon, 236 

 Aiitheinocrinufi, 189 

 Anthocrinns, 216 

 Aiithocystis, 153 

 Anthoiiyia, 474 

 Anthracochiton, 512 

 Anthracomartus, 791 

 Anthracomya, 452 

 Anthraconectes, 783 

 Anthnu-opeltis, 774 

 Anthnicophausia, 759 

 Anthmcoptera, 451 

 AnthriKX^sia, 451 

 Aiithrapalaenion, 757 

 Antinomia, 403 

 Aiitil)leura. 439 

 Antiptychia, 407 

 Antirhynclwndla, 394 

 Antocyrtis, 44 

 Anuscula, 440 

 Aorocrinus, 19G 

 Aparchites, 737 

 Apasmophyllum, ^4 

 Aphanaia, 449 

 Apheleceras, 604 

 Aphetoceras, 600 

 Aphragmites, 596 

 Aphrostroma, 124 

 Aphyllites, 630 

 Apioceras, 611 

 Apiocrinus, 230 

 Apiücystites, 154 

 Apion, 805 

 Apioceras, 608 

 Ai)orrhais, 551 

 Apricardia, 477 

 Apsendesia, 321 

 Aptychopsis, 754 

 Aptyxiella, 549 

 Aptyxis, 549 

 Apus, 733 

 Arachnocrinus, 219 

 Arachnocystites, 152 

 Arachnoides, 288 

 Araeacis, 96 

 Arbacia, 281 

 Arbusculües, 390 

 Area, 443 

 Arcanopora, 346 

 Arcestes, 642 

 Archaediscus, 34 

 Archaeocidaris, 300 

 Archaeocrinus, 188 

 Archaeocyathus, 105 

 Archaeolepas, 744 • 

 Archaeoniscus, 758 

 Archaeoplax, 767 

 Arcliaeoscyphia, 53 

 Archaeosphaerina, 37 

 Arcliarenicola, 139 

 Archastwins, 248 

 Archegetes, 813 

 Archegoci-nim:, 818 

 Archegocystis, 155 

 Archidesmus, 793 

 Archimedes, 341 

 Archinacella, 520 

 Archiorhynchus, 805 

 Architarbus, 791 

 Architectonica, 538 

 Architipnla, 815 

 Archiulus, 793 

 Arcomya, 466 

 Arcoiuyopsis, 438 

 Arcnjmgia, 494 

 Arctitrota, 387 

 Arenicola, 141 

 Areünunna, 715 

 Argas, 753 



TEXT -BOOK OF PALEONTOLOGY 



Ar(i(ixter, 248 

 Argia, 811 

 Argina, 443 

 Argonauta, 688 

 Argopa tagus, 297 

 Argyrothea, 365 

 Argyrotheca, 405 

 Aricardium, 490 

 Arieticeras, 658 

 Arietites, 655 

 Aristerella, 462 

 Aristocystites, 150 

 Aristozoe, 752 

 Arnioceras, 655 

 Arpadites, 648 

 Arrhoges, 551 

 Artemis, 492 

 Arthaberites, 635 

 Arthracantha, 200 

 Arthraster, 251 

 Arthroclema, 343 

 Arthrolycosa, 790 

 Arthropliycus, 141 

 Arthropleura, 758 

 Arthropora, 345 

 Arthroracliis, 710 

 Arthrostylus, 342 

 Arystidicta, 61 

 AsaphelluH, 719 

 Asaphis, 495 

 Asaphus, 719 

 Ascidaspis, 722 

 Ascoceras, 596 

 Ascocystites, 160 

 Ascodictyon, 318 

 Asemoblatta, 803 

 Aspenites, 634 

 Aspergillum, 468 

 Aspidiscus, 99 

 Aspidites, 645 

 Aspidocaris, 754 

 Aspidoceras, 665 

 Aspidodiadema, 276 

 Aspidophyllum, 86 

 Aspidopora, 333 

 Aspidosoma, 249 

 Aspidothyris, 401 

 Aspidura, 256 

 Assilina, 36 

 Assiminea, 545 

 Astacus, 764 

 Astarte, 472 

 Astartopsis, 457 

 Asteractinella, 62, 63 

 Asterias, 247, 252 

 Asteriatites, 237 

 Asterina, 251 

 Asteroblastus, 167 

 Asteroceras, 655 

 Asterocrinus, 201 

 Asteroderma, 57 

 Asteropyge, 726 

 Asthenodonta, 452 

 Asthenosoma, 278 

 Asthenothaerus, 467 

 Astieria, 664 

 Astraemorpha, 104 

 Astraeospongia, 62 

 Astraliuni, 528 

 Astrangia, 98 

 Astreopora, 108 

 Astrhelia, 95 

 Astrocladia, 55 

 Astrocnida, 255 

 Astrocoenia, 101 

 Astrocoma, 237 

 Astroconia, 62 

 Astrocrinus, 172, 190 

 Astrocystites, 160 

 Astroides, 76, 106 

 Astropecten, 247, 249 

 Astropkyton, 255 

 Astropyga, 278 

 Astrorhiza, 24 

 A.t!ih,rn,n,.,-22\ 

 Ashihnnn.nun, 56 



; Astylospongia, 55 

 I Asyniptoceras, 6Lü 



Atactodea, 498 

 j Atactopora, 338 

 [ Atactoporella, 331 

 '■ Ataxaster, 248 

 j Ataxioceras, 664 



Ataxocrinus, 213 

 I Ateleocystites, 150 

 i Atelestocrinus, 218 



Atergatis, 767 



Athleta, 561 



Athyris, 417 



Atikakania, 105 



Atlanta, 536 



Atocus, 806 



Atoma, 564 



Atomodesma, 449 



Atops, 713 



Atractites, 681 



Atretia, 400 



Atrina, 446 



Atrypa, 409 



Atrypina, 408 



Attoides, 790 



Aturia, 603 



Atys, 568 



Aucella, 449 



Aulacoceras, 680 



Aulacophyllum, 83 



Aulacopleura, 715 



Aulacorhynchus, 389 



Aulacostephanus, 665 



Anlacotliyris, 406 



Aulocopium, 53 



Aulocrinus, 224 



Aulonotreta, 371 



Aulophyllum, 86 



Aulopora, 116 



Aulosteges, 891 



Anricula, 574 



Aurigerus, 665 



Aurina, 561 



Austinella, 381 



Austinocrinus, 233 



Austriella, 399 



Autodetus, 543 



Avellana, 567 



Avimola, 447 



Aviculopecten, 457 



Aviculopinna, 446 



Axinopsis, 487 



Axinus, 487 



Axosmilia, 100 



Aysheaia, 136 



Azara, 499 



Azor, 495 



Babinka, 444 

 Bactrites, 629 

 Bactrocrinus, 218 

 Bactropora, 343 

 Bactropiis, 752 

 Bactrotheca, 571 

 Bactryninm, 389 

 Baculina, 654 

 Baculites, 654 

 Baculocystites, 150 

 Badiotella, 460 

 Badiotites, 644 

 Baerocrinus, 211 

 Baetis, 809 

 Bairdia, 740 

 Bakewellia, 447 

 Balanocrinus, 233 

 Balanocystites, 151 

 Balanophyllia, 105 

 Balantionella, 64 

 JUüamtium, 570 

 Baianus, 746 

 Balatonites, 647 

 Baltoceras, 598 

 Banibaganites, 635 

 Banffla, 141 

 Barbarothea, 815 

 Barbatia, 443 



Baroda, 494 



Barrandeites, 638 



Barnmdella, 395 



Barrandeoceras, 600 



Barrandeocrinus, 195 



Barrettia, 484 



Barroisella, 374 



Barroi sia, 71 



Barroisiceras, 669, 67^ 



Bartlettia, 455 



Barycrinus, 218 



Baryphyllia, 99 



Baryphyllum, 82 



Barysmilla, 101 



Basilicus, 719 



Basiliola, 400 



Basterotia, 469 



Bathmoceras, 597 



Bathybius, 17 



Bathycoelia, 382 



Bathycrinus, 230 



Bathycyathus, 95 



Batbynotus, 715 



Bathysiphon, 24 



Bathytoma, 563 



Bathyurellus, 718 



Bathyuriscus, 718 



Bathyurus, 718 



Batillus, 529 



Batissa, 474 



Batocrinus, 195 



Batolites, 482 



Batostoma, 338 



Batostomella, 335 



Battersbyia, 87 



Bayania, 537 



Bayanoteutliis, 683 



Baylea, 524 



Bayleia, 478 



Bdellacoma, 251 



Beacbia, 401 



Becksia, 67 



Beecheria, 403 



Bela, 563 



Belemnitella, 683 



Belemnites, 681, 683 



Belemnocrinus, 215 



Belemnocystis, 151 



Belemnoijsis, 682 



Belenmosis, 683 



Bolemnoteuthis, 684 



Belgrandia, 545 



Belinurus, 773 



Bellardia, 550 



Bellard iella, 564 

 Belleroplion, 522 

 Beloceras, 631 

 Beloptera, 683 

 Belopterina, 683 

 Belosepia, 686 

 Belosepiella, 686 

 Beloteuthis, 688 

 Beitina, 783 

 Bembexia, 525 

 Beneckeia, 646 

 Berenicea, 819 

 Berthelinia, 464 

 Beyrichia, 738 

 Beyrichiella, 738 

 Beyrichiopsis, 738 

 Beyricliites, 647 

 Beyrichocrinus, 195 

 Beyrichona, 735 

 Bicavea, 323 

 Bicia, 373 

 Bicrisina, 320 

 Bidentia, 732 

 Bidiastopora, 320 

 Bifida, 416 

 Biflabellaria, 326 

 Bifrontia, 538 

 Bigenerina, 29 

 Billingsella, 380 

 Billinqsia, 372 

 Billingsites, 597 

 Bilobites, 383 



