INDEX 



The references in heavy-faced type refer to the locahty numbers and the 

 pages upon which the genera and species are described and figured. 



PAGE 



abaris, see Agraulos and Inouyia. 



abderus, see Mcnocephalus and Soknopleura. 



Abrigo limestone, Upper Cambrian locality 358c 213 



abrota, see Agraulos. 



acadiense, see Archceozoan. 



acadicus, see Dolichometopus. 



acalle, see Agraulos and Inouyia. 



acantha, see acanthus and Solenpleura. 



acanthus, see Mcnocephalus. 



acerius, see Mcnocephalus. 



acidalia, see Mcnocephalus and Solcnoplcura. 



acts, see Mcnocephalus. 



Acknowledgments, pre-Cambrian Algonkian algal flora 79 



aclis, see Ptychoparia. 



Acrocephalites Wallerius, genus described 174 



compared with Alokistocare 183 



Alokistocare ? labrosum 185 



Alokistocare, Inouyia, and Ctcnoccphalus e.vsiilans 



Linnarsson 176 



Ptychoparia striata (Emmrich) 175 



comparison of genera 176 



of species 174-175, 176-177 



formerly would have been included with Ptychoparia 177 



genotype, Solcnoplcura f stenometopa Angelin 174 



geographic distribution I75 



observations I7S 



represented, China, North America and Europe 59 



stratigraphic range I75 



Swedish diagnosis I74 



americanus, new species, described 177 



figured, pi. 24, figs. 2, 2a-b, 3. 30-6 230 



compared with Acrocephalites ? ma jus 180 



Acrocephalites aoris 178 



Acrocephalites insignis and A. stcnomctopus 177 



Acrocephalites multiscgmciitus 180 



Acrocephalites tutus 181 



Alokistocare althea and A. poniona 183 



discussed I75 



formation and locality 178 



segments I77 



457 



