INDEX 375 



PAGE 



Mount Wilson qnartzite (Devonian) 208 



Moxomia, new genus, Ozarkian eg 



described 107 



figured, pi. 12, fig. 3 



Moxomia angulata (Hall and Whitfield) 107 



Murchison formation (Middle Cambrian) 248 



National Academy of Sciences 188 



New formation names 47 



Ordovician 217 



Ordovician-Silurian Boundary 41 



Ottertail formation (Upper Cambrian) 237 



Ottertail Range 322 



Ozarkian 222 



lower boundary of 223 



upper boundary of 223 



Ocarkispira Ico Walcott, new species, Ozarkian 2,7 



figured, text fig. 6 38 



Paget formation (Upper Cambrian) 242 



Paleozoic time. Troughs of 152 



Phareo Peaks section 299 



Pipestone formation (Upper Devonian) 51 



Platypeltis Calloway 60 



figured, pi. 14, fig. 5 

 Pre-Devonian formations of the Beaverfoot-Brisco-Stanford Range north 



of Kicking Horse Canyon 40 



Pre-Devonian Paleozoic formations 207 



Pre-Devonian sedimentary formations of the Cordilleran Geosyncline of the 



Canadian Rocky Mountains, folding of 201 



Pre-Devonian unconformity and interval in the Cordilleran Provinces.... 198 



Pre-Paleozoic section 365 



Pre-Pleistocene formations of the floor of the Columbia River Valley 

 ("Rocky Mountain Trench") from Canal Flats 



to Golden 45 



Proterozoic deposits in the Cordilleran Geosyncline 150 



Psiloccphalus Salter 60 



figured, pi. 14, fig. 8 



Ptarmigan formation (Middle Cambrian) 250 



Ptarmigan Peak section 277 



Ranger Canyon section 264 



Resser, Dr. Charles E 7, 64, 65, 188, 356 



Robson formation ( Ordovician) 218 



Robson Peak area 348 



Robson Peak district 189 



Robson Trough 172 



