INDEX 



689 



Billingsella coloradoensis, 360 



traiisvcrsa, 360 

 Bilobitcs various, 414 

 Biotite, 255 

 Birds, Cretaceous, 550, 551 



Eocene, 572 



Jurassic, 519 

 Bison, 666 

 Black Hills, 340 

 Black River limestone, 368 

 Blastoids, Pennsylvanian, 468 

 Blue mud, 198 

 Bonney, T. G., cited, 245 

 Botriopygus alabamensis, 554 

 Bowlder-clay, 618 

 Bowlders in drift, 617 

 Bnu hioppds, Cambrian, 360 



Devonian, 418 



Jurassic, 512 



Mississippian, 414, 415, 419 



Ordovician, 378, 382 



Pennpylvanian, 468 



Silurian, 306, 397 



Triassic, 499 

 Brachiosaurus, 517 

 Brachiospongia digitata, 386 

 Branner, J. C., cited, 373, 564 

 Brazil, coal in, 457 

 Breccia, 267 



Brontosaurus (Apatosaurus), 517 

 Bronzite, 255 

 Brooks, A. H., cited, 447 

 Brooksella alternata, 362 

 Broom, R., cited, 479 

 Brule formation, 575 

 Bryozoans, Devonian, 414, 419 



Mississippian, 435 



Ordovician, 383 



Pennsylvanian, 468 



Silurian, 398 

 Buchanan epoch, 633 

 Buckley, E. R., ched, 34, 122, 374 

 Bumastus trentonensis, 378 

 Bunter formation, 491 

 Buttes, 93, 94 

 Bysmaliths, 228 



Cairngorm, 254 

 Catamites, 424, 459, 476 

 Catamites cistii, 461 

 Calcareous tufa, 660 

 Calcite, 256 



Calhoun, F. H. H., cited, 625 

 California earthquake, 208, 209, 217 

 rift, 583 



Calliostoma philanthropes, 597 

 Callipteridium membranaceum, 466 

 Callopora pulchella, 383 

 Caloosahatchie beds, 604 

 Calvert, W. R., cited, 539 

 Calvin, S., cited, 645, 665 

 Calymene callicephala, 378 



niagarensis, 399 

 Camarotcechia barrandei, 415 

 Cambrian faunas, origin of, 366 



succession of, 364 

 Cambrian glaciation, 356, 357 

 Cambrian life, 358 



advancement of, 363 

 Cambrian of Europe, 356 

 Cambrian period, 344-366 



close of, 355 



duration of, 357 

 Cambrian rocks, distribution, 345, 347 



metamorphism of, 354, 355 



outcrops, 352 

 Cambrian sedimentation, 351 



submergence, 349 

 Campbell, M. R., cited, 97 

 Campeloma harlowtonensis, 530 

 Camptonectes bellistriatus, 512 

 Canada, Archean rocks of, 321 



Proterozoic rocks of, 340 

 Canadian epoch, 368 

 Cancellaria alternata, 597 

 Canoe-shaped valleys, 95 

 Canyon of the Yellowstone, 70 

 Canyons, 70, 87 



Carabocrinus vancortlandti, 384 

 Carbon formation, 539 

 Carbonaceous slates in Huronian, 332, 



333 

 Carbonation, 23 



of igneous rocks, 264 

 Carboniferous. See Pennsylvanian. 

 Cardioceras cordiformis, 512 

 Cardium leptopleurum, 595 

 Carnivores, Eocene, 570 



Miocene, 594 

 Caryocrinus ornatus, 395 

 Cascade formation, 525 

 Cascade Mountains, age of, 588 

 Cassidulus subquadratus, 554 

 Catazyga headi, 382 

 Cat's-eye, 254 



Catskill formation, 402, 406 

 Caverns, 38, 39 

 Cavity filling, 286 

 Cayugan epoch, 388 



series, 391 



