INDEX ' 467 



PAGE 



New York, drift block with fossils, from near Trenton, Oncicia County.. 253 



geographic distribution of Dikelocephahis in 3^4 



Potsdam sandstone, Trenton Falls 270 



Saratoga County, reconnaissance work 252 



Saratoga Springs, Upper Cambrian locality 76 258-294 



" Saratogan " fauna as represented in Dutchess County 255 



trails from Mooers 286 



Upper Cambrian locality 76a, Hoyt limestone 262 



locality ili, Chateaugay 268 



77, Potsdam sandstone 262-304 



109, Champlain Canal 268 



localities no, iioa, Whitehall 268 



locality in, Chateaugay 267, 292 



136, Port Henry 262 



136a, Port Henry 268, 269 



338t, Ausable Chasm 262 



367f , French Creek 262 



367^, Port Henry 262 



367h, Rosse Bridge 262 



" New York Potsdam-Hoyt fauna " 251 



Newton, New Jersey, Lower Ozarkian locality iic 362 



neivtonensis, see Calvinella, Dikelocephahis, Eoorihis, and Ptychoparia. 



Nicomache japonica, compared with Oesia 133 



Nileus f dia (Walcott), listed from locality 70a 359 



Nisusia sp. undt., listed in stratigraphic section 338 



nitida, see Chuangia. 



Nomenclature, Robson Peak district, changes in names 331 



North America, map showing pre-Cambrian distribution 4-5 



Olenopsis in 239 



North American Continent, Cambrian fauna discussed 2 



oldest fossiliferous Cambrian rocks i 



pre-Cambrian continental surface of 9 



theoretical profile 10 



Notostraca Caiman, order named 175 



Branchiopoda under 163 



classification of 154 



foreshadowed by Burgess shale fauna 165 



nuda, see Obolella. 

 nundina, see Syntrophia. 



obliqua, see Hymenocaris. 



Obolella atlantica Walcott, compared with Obolella nuda 312 



chromatica, compared with Obolella cf. chromatica 313 



cf. chromatica Billings, described 313 



figured, pi. 52, fig. 2 322 



compared with Obolella chromatica and O. nuda 313 



in synonymy 313 



listed in stratigraphic section 339 



hota Walcott, listed in stratigraphic section 339 



