INDEX 489 



PAGE 



Schmidtiellus Moberg, in synonymy 262 



reasons for not using term 263 



mickvuitsi Moberg, in synonymy 263 



Schuchert, Chas., acknowledgments 75, 141 



bibliographic references 162 



mentioned 234, 305 



terminology of, for Brachiopoda 154 



Schuchertina, classification of 142, 145 



evolution of pi. 11 (pp. 140-141) 



nature of shell substance 150 



Schuchertinidse, classification of 142 



defined 145 



diagram showing line of descent 140 



distribution in Cambrian strata 140 



Scolithus linearis, stratigraphic position and association 186 



sp. undt., stratigraphic position and association 186, 215 



sculptilis, see Microniitra. 

 sculptilis endlichi, see Micromitra. 



Sections, method of measuring i 



septal plates, defined 158 



" Serpulite grit," fossils from 324, ^^2, 336, 342, 350 



serratus, see Neolenus and Ogygia. 



Sessile spondylium, defined 158 



Shaler, N. S., and Foerste, A. F., bibliographic reference TiJ"; 



Shantung, China, fossils in 76 



shelhycnsis, see Wimanclla. 



Shensi, China, fossils in 76 



Sheppard-Kintla series, correlated with Hector-Corral Creek series 431 



Sherbrooke formation, defined 2 



on Mount Bosworth, section of 204-205, pi. 19 



correlated 171 



Sherbrooke ridge, view of pl- 19 



Shimer, H. W., bibliographic reference 377 



identification of Hohnia broggeri from Middle Cambrian 254 



Shropshire, fossils from 282, 283 



Shumard, B. F., bibliographic references 114, 162,219 



Siam, California, fossils from 323 



Silurian ? rocks, section of on Dearborn River 200-201 



siluricus, see Obolus. 



Siluro-Devonian, thrust over pre-Cambrian near Baker Lake 429 



Silver Peak Group, fossils from 296, 315, 320, 323, 330 



section of , 185-188 



Silver Peak quadrangle, fossils from. 54, 87, 88, 257, 260, 300, 315, 320, 323, 330 



Silver Peak section, Nevada, correlation 171 



simplex, see Wimanella. 

 siiiuata, see Orthis. 



