476 INDEX 



PAGE 



Planolites, listed from Potsdam-Hoyt fauna 254 



(Annelid trail), listed in stratigraphic section 339 



new Lower Cambrian subfauna 310 



sp. ?, figured, pi. 22, fig. i 142 



associated with Ottoia prolifica 142 



Plates listed, see Illustrations. 

 platycephalus, see Asaphus. 



Platyceras hoyti Walcott (=: Pelagiclla), synonymic reference 266 



from Hoyt quarry fauna 252 



listed from " Saratogian," Hoyt quarry 253 



minutisshna Walcott {=PelagielIa), synonymic reference 266 



from Hoyt quarry fauna 252 



listed from " Saratogian," Hoyt quarry 253 



Platyceras ?, listed with St. Lawrence fauna 356 



Plaiycolpus (^ Dikelocephalus barabncitsis) 366 



(= D. iiabellifer) 366 



barabucnsis (Winchell), listed from Jordan formation 355 



cf. eaton'i (Whitfield), listed from Jordan formation 355 



platyurus, see Thainnocephalus. 



Plectorthis kayscri Walcott (= Eoorthis kayseri (Walcott)), former and 



present generic reference 71 



pagoda Walcott (^Eoorthis pagoda (Walcott)), former and pres- 

 ent generic reference 71 



Plectorthis, see Orthis. 

 plena, see Yohoia. 

 pleurcxantheiniis, see Ceranrtis. 



Pleurons, triangular-shaped, in Yohoia tenuis 172 



Pogonip limestone, Calvinella tenuisculptiis of 359 



Nevada, forms similar to Pagodia from 269 



pogonipensis, see Lingulella. 



Point Levis, Canada, locality of Levisia richardsoni 86 



politus, see Dicellomus. 



Pollinger Mountain, generic name derived from 125 



P ollingeria Walcott, new genus described 134 



genotpye, P ollingeria grandis 124 



geographic distribution 125 



stratigraphic range 124 



grandis Walcott, new species described 125 



figured, pi. 21, figs. 7-9 140 



genotype of Pollingeria 124 



compared with Wiwaxia corritgata 125 



Climactichnites 261 



stratigraphic position and association 153 



Polyartemidse, remarkable adaptation of 165 



Polychseta, subclass named 113 



compared with Ottoia 127 



difiFerence of Pikaia gracilens from 132 



Polychsetous annelids, described by Ulrich, reference to no 



Polynoidse., compared with Wiwaxia corrugata 124 



Pompeckj, J. F., cited on Olcnopsis and Paradoxides 239 



! 



