556 INDKX 



Shantungia — Continued. page 



spinifera Walcott, compared with Tciiiistio)i hiiisi 9 



listed, Ku-shan shale 66 



Shan-tung and Manchuria 70 



stratigraphic and geographic position 48 



Shen-si, Shan-tung and Shan-si, stratigraphy discussed 4 



shcnsicnsis, see Obolus shansiensis. 



Shooks Gap, Tennessee, Middle Cambrian locality 10 371 



Shumard, Dr., description of Crcpiccphalus tc.raiius cited 210 



Siberia, Cambrian fossils of Schmidt 7-8 



fauna correlated with China and India 64 



Lower Cambrian sea 62 



von Toll's Anthozoa type 58 



Siberian area, transgression, compared with eastern and southeastern Asia 5 



Cambrian, von Toll's memoir, cited 12 



fauna, correlated Lower Cambrian, Australia, Sardinia, and North 



America 72 



province, Cambrian fauna discussed 71 



distinct from Shan-tung province 72 



not connected with Shan-tung Middle Cambrian ^t, 



classified with Asian Cambrian areas 70 



sibirica, see Cyphaspis. 



sibiricus, see ArcfueocyatJiits and Rhabdocyatluis. 



simplex, see Norwoodia. 



Simpson Spring, Utah, Middle Cambrian locality lis 371 



simulans, see Kinneyia. 



Sinian, changes marking close 41 



Sinian sea, Cyrtoceras cambria identified 59 



discussed 37 



Sinian system, Ch'ang-hia, Shan-tung 51 



sections Si-53 



Sinio-Siberian sea, position stated by von Toll 72 



Sin-t'ai district, Shan-tung. Middle Cambrian 64 



section 52 



species, listed 65 



Sin-t'ai-hien, Shan-tung, Cambrian localities, C33, C33a, C52, and C57. 24-28 



Sinuopea, 3 undt. spp., listed 409 



Sixteen Mile Canyon, Montana, Middle Cambrian locality 621 362, 425 



Middle Cambrian locality I59f 186 



Siyeh limestone, Algonkian, Little Kootna Creek. ^Montana 113. 130 



Algonkian locality 400, Montana 108 



locality 400a, Montana 113 



sedimentation 81 



Daly's view discussed (footnote) 81 



slatkoii'skii, see Dorypygc and Proctus ( Phaeton ). 



sniithi, see Anomocarella. 



Smithsonian Institution, Cambrian collection from Tschang-hsing-tau. . . . 4 



sodeui, see Tciiiistioii. 



