654 



STKATIGRAPHICAL GEOLOGY 



Arbacia, 574 



Arber, B. A. N., 301, 308, 309, 



320, 322, 363 



Arbroath Sandstones, 232 

 Area, 469, 576 

 Area Clays, 648 

 Arcestes, 349, 351 

 Archan rocks, 5, 34 

 Archceocalamites, 245 

 ArchcBoeidaris, 247 

 Archceocyathus, 72, 97 

 Archaxiniscus, 438 

 Archceopteryx, 384, 435 

 Archceoscyphia, 97 

 Archanodon, 212, 225, 226, 238, 



264 



Archegosaurus, 327, 341 

 Archidesmtts, 226 

 Archimedes, 319 

 Arctic Freshwater Bed, 627 

 Arctic Region, 238 

 Arctocyon, 528 

 Arctomys, 538 

 Ardara, granite of, 50 

 Ardennes, the, 101, 215, 430 

 Ardmillan Group, 135, 136 

 Ardnamurehan, 368 

 Ardtun Head, 547 

 Are schists, 68 

 Arenig Mountains, 117, 118, 



123 

 Arenig Series, 109, 110, 116, 



119, 128, 136 

 Argile de Boom, 563 

 Argile de Flandres, 550 

 Argillornis, 528 

 Argyllshire, 43, 403 

 Arietites, 386 

 Aricmellus, 82, 104 

 Arley mine coal, 297 

 Armagnac, 578 

 Armorican flexures, 314, 345 

 Armorican Sandstone, 141 

 Arno, val d', 605 

 Arragonite shells, 19 . 

 Arran, Isle of, 269, 359, 368, 



402, 548 



Arthur's Seat, 267 

 Artinskian, 325, 343, 344 

 Arundel, 508, 509 

 Asaphellus, 76, 78 

 Asaphus, 110, 113 

 Ascoceras, 158 

 Ascoceras Limestone, 182 

 Ashburton, 207 

 Ashdown Sand, 475 

 Ashgillian, 110, 124, 132 

 Aspidoceras, 435, 436 

 Aspidorhynchus, 410, 435, 438 

 Astarte, 385, 436, 469, 539 

 Astartian, 451, 452 

 Asterolepis, 226 

 Asterophyllites, 286 

 Asteroplax, 238 

 Astian stage, 587, 605, 606 

 Aatroccenia, 385 

 Asturias, 100, 214, 281, 313 

 Ateleaspis, 178 



Atherfield Clay, 475, 476, 477 

 .Athyris, 214, 248 



Atlantic Region, 107, 239, 283, 



320, 586 



Atlantosaurus, 434 

 Atractites, 349 

 Atrypa, 110, 156, 157, 159, 



160, 162 



Aturia, 528, 576 

 Aube, the, 514, 515 

 Auchenaspis, 158, 162 

 Auchmithie conglomerate, 



232 



Audierne, 60 

 Aulacoeeras, 349 

 Aulophyllum, 247 

 Aulosteges, 327 

 Aultbea Beds, 45 

 Aurillac, 580 

 Austria, Archsean of, 62 



Carboniferous of, 313 



Cretaceous of, 521 



Jurassic of, 455 



Miocene of, 582 



Pliocene of, 602 



Silurian of, 188 



Trias of, 373, 375, 379 

 Autun basin, 340 

 Autunian, 325, 340, 345 

 Auvergne, 566, 579, 00^ 

 Avellana, 466 

 Aveyron, 340, 341 

 Avieula, 161, 162 

 Aviculopecten, 195, 246, 248 

 Avonian Series, 244, 262, 278 

 Axis, 588 



Axmouth, 368, 499 

 Aylesbury, 444, 447, 449, 483 

 Aymestry Limestone, 165, 



167 

 Ayrshire, rocks of, 134, 234, 



268, 303, 338, 339, 622 

 Azeca, 528 

 Azoic era, 5 



Babbacombe, 207, 333 



Back well Hill, 366 



Hactrites, 196 



Baculites, 466 



Baggy Beds, 209 



Bagshot Beds, 527, 549, 551 



Baiera, 325, 350, 414 



Bailey, E. B., 43 



Bawdia, 248, 291 



Bajocian, 383, 409, 431, 458 



Bakevellia, 327 



Bala Series, 110, 124, 128, 



132, 138 



Bala Limestone, 125 

 Balachulish Limestone, 43 

 Balanophyllia, 528, 591 

 Balclatchie Beds, 136 

 Balkans, the, 320, 605 

 Ballagan Beds, 267 

 Ballard Cliff, 506 

 Ballypalady, 547 

 Baltic Region, 103, 183, 223, 



516, 647 

 Bamboo, 604 

 Banbury, 400 

 Bangor, 53, 88 

 Bangor Series, 53 



Bannisdale Slates, 175 

 Bantry Bay, 275 

 Baphetes, 292 

 Bardon Hill, 58 

 Bargany Beds, 177 

 Bargate Beds, 479 

 Barmouth Grits, 82 

 Barnstaple, 276 

 Barr Series, 135, 136 

 Barrande, Dr. J., 104, 145, 



184, 221 



Barrandeiceras, 162 

 Barremian, 463, 489 

 Barrois, Prof. C., 60, 100, 144, 



213, 214, 281 

 Barroisia, 466 

 Barrow, G., 97 

 Barrule Slates, 94 

 Earth, 94 



Barton Beds, 527, 535, 543 

 Bartonian, 549, 554, 555 

 Basse Loire, 279 

 Basses Alpes, 408 

 Bath, 398, 416 

 Bathonian, 383, 409, 422, 428, 



431, 458 

 Battle, 440, 450 

 Bauterem, 563 

 Bauxite, 547 

 Bavaria, 373, 375, 408, 554, 



564 



Bazas, 578 

 Beaches, raised, 645 

 Beaminster, 422 

 Bear Island, 238 

 Beauce, Calcaire de la, 566, 



579 



Beauchamp, Sables de, 554 

 Bedfordshire, 443, 483, 503 

 Beer Head, 499, 503 

 Belemnite Marl, 501, 503, 505 

 Belemnitella, 460, 496 

 Belemnites, 385, 390, 434, 435 

 Belemnoteuthis, 436 

 Belfast, 359, 365 

 Belgium, 101, 144, 186, 215, 



278, 310, 550, 562, 602 

 Belhaven, 267 

 Belinurus, 292 

 Bell, R., 596 

 Bellerophina, 492 

 Bellerophon, 76, 78, 115, 158, 



162, 196, 249, 327 

 Beloceras, 196 

 Belodon, 352, 371, 434 

 Beloptera, 528 

 Belosepia, 528 

 Bembridge Beds, 556, 561 

 Benan conglomerate, 135 

 Bencliff Grits, 442 

 Bencraft Shales, 140 

 Beneckeia, 354, 371 

 Berg, Sables de, 563 

 Bergeron, J., 61, 281 

 Bernberg, 564 

 Bernician Series, 244, 263 

 Beroun, 104, 222 

 Berriedale Beds, 236 

 Berwickshire, 235 

 Berwyn Mountains, 126 



