5o8 INDEX 



Eau Claire formation — Continued. page 



locality 79X : . 167, 193, 209 



80, 82, 82a, 83a, 98, 98X, 134 192 



83a 163, 209 



84 165, 167, 192, 209, 219 



86c 199 



98 209 



98X 167, 209 



100 167, 209 



looa 165. 192, 209 



339k 195 



Eldorado limestone, Nevada, Middle Cambrian locality 55b 369 



elegans, see Orria. 



Eleva, Trempealeau County, Wisconsin, Middle Cambrian locality 796.. 214 



ella, see Obolella (IVestonia) . 



Elliptocephala asaphoides Emmons, listed 317 



elongata, see Tsinania. 



clongatus, see Asaphiscus {Blainia), Coscinocyathiis and Crepicephalus 



texanus. 

 elvira, see Coscinocyathiis. 



Embolimus rotundata Rominger, synonymic reference 346 



rotimdatus Rominger, cited in synonymy and discussion 343 



Emigsville, York County, Pennsylvania, Lower Cambrian locality 49W. . 323 



Empire shale, described 265 



Belt series 99 



interpreted by Rothpletz 277 



Marsh shale confused with, by Rothpletz 278 



Eocystites ? longidactylus Walcott, listed 409 



f undt. sp., listed 374 



Eodiscidae Raymond, family described 407 



synonymy 407 



genus Pagetia discussed 407 



Eodiscus connexus Walcott, listed 317 



punctatus Salter, compared with Pagetia bootes 408 



related to Pagetia 407 



scanicus, related to Pagetia 407 



speciosus Ford, listed 317 



Eoorthis agreste (Walcott) (=Orthis (Plectorthis) agreste), generic 



references 15 



listed, lower Kiu-lung 64 



stratigraphic and geographic position 45 



desmopleura (Meek), associated with Tsinania cleora 227 



doris (Walcott) (=1 Orthis (Plectorthis) doW^), generic references 15 



listed, Upper Cambrian, Ch'au-mi-tien 68 



stratigraphic and geographic position 45 



kayseri (Walcott) (=Orthis (Plectorthis) kayseri), generic ref- 

 erences 15 



listed, Upper Cambrian, Ch'au-mi-tien limestone 68 



stratigraphic and geographic position 45 



