INDEX 479 



PAGE 



Bays Mountains, Tennessee, Middle Cambrian locality lo 371 



Beaver Creek, Trempealeau County, Wisconsin, Upper Cambrian locality 



79X 167, 193, 209 



Beaver Creek section 270 



belenus, see Lisania and Menocephalus. 

 belesis, see Bathyuriscus. 

 bella, see Ptychaspis. 

 bellagranulata, see Damesella. 



Bellerophon sp., in Beaver Creek section 272 



Belt and Cambrian, explanation of apparent conformity 287 



extent of unconformity 288 



Belt formation, Helena limestone, as identified by Rothpletz 260 



Belt (Greyson shales) terrane, Montana 152 



Belt Mountains-Helena section, described 285 



Belt Mountains and Bov^r River Valley sections, compared 284 



Belt series, Algonkian fauna of 97 



Big Snowy Mountains 274 



Big Snowy section 276 



Little Belt section 273 



section 99 



Belt terrane, Algonkian locality 400J, Montana 117 



Beaver Creek section 270 



of Montana, correlated, Hu-t'o system 37 



relations between Cambrian and 263 



and Flathead Cambrian, contact described 285 



Beltian series, Algonkian locality 400b, Montana 114 



Newland limestone, locality 400c, Montana, 105-107, 109, no, 116 



stratigraphic position 99 



BcUina danai Walcott, figured, pi. 22, figs. 1-18 154 



discussed 98 



Algonkian crustacean 83-84 



associated with Planolites corrugatus Walcott 152 



Planolites superbus Walcott 152 



in Greyson shales 99 



belus, see Bathyuriscus, Conokephalina, and Solenopleura. 

 bessus, see Dolichometopiis. 



Bergeron, J., cited, historical review, Chinese Cambrian 7 



Cambrian fauna, Shan-tung 7 



bianos, see Anomocare and Coosia. 



Bic, Quebec, Canada, Lower Cambrian locality 20 315, 323, 327, 329 



associated fauna 322 



Lower Cambrian locality 2r 314, 329 



Bicia gemma (Billings), listed 322 



Big Belt Mountains, algal deposits of 100 



Algonkian locality 400c, Montana 105-107, 109, no, 116 



Helena section, fig. 10 263 



Big Cedar Bridge, Georgia, ]\Iiddle Cambrian locality 142a 372 



