INDEX. 



375 



Wu-t'ai system, considered as not of marine origin 



Wu-t'ai-hien, Shen-si, localities C 75 and C 77 near. . 



Yen-chuang, Sin-t'ai-hien, Shan-tung, Ku-shan shale formation 



near 



Ordovician locality C 64 near 



section. Cambrian strata of Kiu-lung-sban (figs. 5 and 6) 



Kiu-lung formation from (fig. 8) 



Sin-t'ai district, Shan-tung, Cambrian localities C 1-14, 



C40, C60-64 near 



specimens from, compared with those from Ta-ling 



(Station 69). locality of Upper Paleozoic fossils 



Yenesei River, fauna of valley of 



transgression in Siberian area now occupied by 



Yen-tsy-yai, Shan-tung, abundance of Teinistion tan si from. . . , 



fossils from, as discussed by Woodward 



Liostracina kransei of Monke occurs at 



unlisted locality 1 1 



Y6n-yi-ss?, Shan-si (station 20), locality of Upper Paleozoic 



fossils 



scanty fauna from 



Yurkia Walcott, genus named and referred 



in synonymy 



reason for reference of species orienialis to 



PAGE. PACK. 



30 Yorkia f orientalis Walcott, described 72 



25 i figured, pi. 3, figs. 5, 50 234 



compared with Yorkia wanner i 72 



in synonymy 72 



127 listed with Kiu-lung fauna 52 



280 stratigraphic and geographic position of 35 



44 wanner i, compared with Yorkia ? orientalis 7.2 



45 Yunnan, unlisted locality in Yunnan-Fu 104, 105 



faunal horizons of, discussed 49 



15-23 i locality of Man-t'o shale Redlichia fauna 50 



192 Yunnan-Fu, Yunnan, Redlichia chinensis from 104 



303 unlisted locality 104, 105 



51 Yung-ning sandstone, Lower Cambrian age of 49 



2 



m Zacanlhot'dcs Walcott. distinctive in North American fauna. ... 56 



6 compared with Redlichia 103 



144 illustrated, pi. 24 276 



i, 144 idahoensis Walcott, figured, pi. 24, fig. 3 276 



typifalis Walcott, figured, pi. 24. fig. 2 276 



303 ' compared with Redlichia ? Jinalis 105 



299 Zaphrentis ? sp., described and discussed 311 



72 in table of distribution 304 



72 Zittel, K. A. von, bibliographic reference 14 



73 cited in synonymy of genus Dorypyge 107 



