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Solenopleura-Vike forms, associated with Tsinania cleora Walcott 227 



Solenopleura ? stenometopa Angelin, in synonymy 181 



sospita, see Lonchocephalus. 



stator, see Agraulos. 



stenometopa, see Acroccphalites and Solenopleura. 



stenometopus, see Acroccphalites. 



Stephen formation, Middle Cambrian locality 14s 225 



Burgess shale member, Middle Cambrian locality 35k 226 



stephenensis, see Karlia and Menocephalus. 



subcoronata, see Ptychoparia. 



subcoronatum, see Alokistocare. 



subcoronatus, see Conocephalites. 



Sweden, Acroccphalites in 175 



Middle Cambrian locality 30911 181 



Tapeats sandstone. Middle Cambrian locality 74 184 



tenera, see Norwoodia. 



Tennessee, Norwoodia in 169 



Saratogia in 195 



Upper Cambrian localities 15, 107c 178 



locality 107 205, 215, 216, 218 



localities 103, 103a, 107a, 107b 171 



locaHty io6a 170 



localities 117, 124a 172 



locality 1 17c 172, 215 



localities ii8a, 123b, 125, 125a, 126a 215 



locality 119 205, 215, 218 



locality 120 205, 215, 217 



locality 123a 190 



locality 124 170, 172 



locality 128 197 



locality 173 196 



texanus see Arionellus {Bathyurus) and Crepicephalus. 



Texas, Crepicephalus in 203 



Crepicephalus texanus (Shumard), type specimen from 209 



Upper Cambrian localities I4d, 67a 213 



thoosa, see Crepicephalus. 



ticida, see Alokistocare. 



Trempealeau, Wisconsin, Upper Cambrian locality 838 199 



Upper Cambrian locality 83* 163, 209 



Trilobita, Middle Cambrian, publication on 160 



Trilobites, Cambrian, publications on 160 



tripunctatus, see Crepicephalus. 



Tsinania Walcott, genus described 227 



synonymy 227 



genotype, Illcenurus canens (Walcott) 227 



canens, allied to Tsinania elongata 228 



compared with Tsinania cleora. , 227 



