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Post Oak Springs, Tennessee, Middle Cambrian locality 1 1 337 



Powell County, Montana, Lower ? Cambrian localities 4v and 4q 339 



Lower ? Cambrian localities 4w and 8j 340 



Middle Cambrian locality 3 j 362 



Powers, Sydney, specimen collected by 352 



powersi, see Bathyuriscus (Poliella). 



Prairie du Sac, Wisconsin, Upper Cambrian locality 85 406 



primus, see Bathyuriscus (Poliella). 

 probus, see Bathyuriscus (Poliella). 

 productus, see Dolichometopus. 



Proparia Beecher, order named 407 



not evolved through Opisthoparia 407 



Protospongia sp., listed 317 



Protypus, mentioned 324 



specimen measured by error for Corynexochus stcpheiieiisis. 324 



hitchcocki (Whitfield), compared with Bathyuriscus batis 338 



senectus Billings, synonymic references 315 



sencctus parvulus Walcott, synonymic reference 328 



Psilocephalus Salter, compared with Illcenurus 405 



Ptarmigan Pass, Alberta, Lower Cambrian locality 35 1 328 



Ptychaspis sp. undt., listed T,2,y 



Ptychoparia, compared with Asaphiscus 382 



compared with Asaphiscus ? florus 392 



listed 403 



cf. adanisi (Billings), listed 317 



fitchi W'alcott, listed 317 



piochensis Walcott, listed 409 



striata, compared with Asaphiscus 382 



sp. undt., associated with Bathyuriscus bclus 340 



listed 2,2,7 



2 spp., listed 322 



3 spp., listed 339. 353 



sp., associated with Asaphiscus (Blainia) glabra 394 



listed 317, 339, 350, 353 



unlike Lisania 404 



quadratus, see Illcruurus. 



Quebecia n. sp., listed 321 



Rainbow Valley. Utah, L^pper Cambrian locality 14V 389 



Raphistoma ? broggeri, associated with Coryne.vochus bornholinieiisis 



Gronwall 314 



Raymond, Dr., genera included by, under Ogygiocarinse 375 



Rcdlichia Cossmann (= Dolichometopus tafei Woodward) 359 



cited in synonymy 353 



Reed, F. R. C, cited 347 



richthofeni, see Dorypyge. 



Rogersville, Tennessee, Upper Cambrian locality 102a 399 



Upper Cambrian locality 121a 399 



locality 123b 392, 398, 399, 401 



125 near 392, 398, 399 



