432 INDEX 



PAGE 



Clark, Austin H., cited on alimentary canal of Echinodermata 50 



cited on ancestors of echinoderms (footnote) 45 



Classification 347 



Sidneyia and Amiella 19 



table of 154 



used in this paper 1 53 



Climactichnitcs Logan, genus described 259 



compared with Pollingeria grandis 261 



Protichnites 276 



genotype, Climactichnites wilsoni Logan 261 



in synonymy 259 



listed from Potsdam-Hoyt fauna 254 



Protichnites trails compared with (synonymy) 259 



tracks, probably not left by trilobite 278 



youngi (Chamberlin), figured, pi. 38, fig. i 282 



pi. 39, figs. 1,2 284 



characterized 260, 261 



Coleman Creek, Robson Peak district, illustrated, pi. 57, fig. i 338-339 



locality described 329 



colleni, see Acrothele. 

 collicia, see Lingulella. 



Colorado, Upper Cambrian locality 20b Z77 



coloradoensis, see Billingsella and Saukia. 

 commune, see Anomocare. 

 communis, see Agnostus and Orthothcca. 

 compacta, see Naraoia. 



Comparative stratigraphic sections, Robson and Bosworth 343 



comtis, see Anomocarella and Ptychoparia. 



Conaspis Hall, genus discussed (footnote) 357 



(=: Conocephalites, Arionellus, and Ptychoparia) (footnote) . 358 



species referred to (footnote) 358 



aualina (Hall), listed from Franconia formation 357 



- cf. anatina (Hall), listed from Jordan formation, 355 



bipunctata (Shumard), Hsted from Franconia formation 357 



connata (Walcott), listed from Eau Claire fromation 358 



eryon (Hall), listed from Franconia formation 357 



nasuta (Hall), listed from Franconia formation 357 



oweni (Hall) ?, listed from Franconia formation 357 



patersoni (Hall), listed from Franconia formation 357 



per sens (Hall), listed from Franconia formation 357 



? shumardi (Hall ?), listed from Franconia formation 357 



Conoccphalina, see Conokcphalina (original spelling). 



Conoccphalina Brogger, genus named 269 



spelling now changed to original, Conokephalina 387 



Conocephalites, Dikelocephahis iozvensis referred by Hall to 366 



anatinus Hall, referred to Conaspis (footnote) 358 



breviceps ? Walcott, listed from locality 62 361 



calciferus Walcott {=^Lonchocephalus), synonymic reference.... 270 

 from Hoyt quarry fauna 252 



