FORMATION'S AND FOSSILS OF SOUTH MANCHUBIA 



17 



stage) of the North American Blount (Upper Chazyan). It also 

 appears to be the equivalent of the lower part of Kobayashi's Tou- 

 f angkou series, and the lower part of Matsushita's Aigawa series. 



KANGYAO FORMATION 



Type locality. — ^Half a mile west of Shang-kang-yao, 3 miles 

 southeast of the Yen-tai colliery. 



Character. — ^Moderately thick-bedded, grayish-black limestone that 

 is crossed by many calcite veins. 



Thickness and geografhic distribution. — Except at the type local- 

 ity and on the eastern slope of San-leng hill, near Wu-hu-tsui col- 

 liery, I have separated no undoubted Kangyao, but I found fragments 

 of Lophos-pira and other gastropods in the lower part of the Ordovi- 

 cian limestone in the Wu-hu-tsui, Pen-hsi-hu, and Niu-hsin-tai sub- 

 districts. 



T. Kobayashi also collected a number of Lophospira specimens 

 from his Tofango series in both Pen-hsi-hu and Niu-h,sin-tai sub- 

 districts, as well as from his Actinoceras zone in the Wu-hu-tsui 

 subdistrict. It seems, therefore, that the Kankyao may occur rather 

 extensively in the Wu-hu-tsui area and in the Tai-tzo-ho district. 

 This question is hereafter discussed in greater detail (p. 30). 



In a maize field near Shang-kang-yao, I found a very much weath- 

 ered limestone, 20 m (65.6 feet) in thickness, from which I collected 

 the characteristic Stones River fossils listed below. 



Stratigraphic relatione. — The base and top of the Kangyao have 

 not yet been located and its relationships to the adjacent formations 

 are, therefore, not definitely fixed. 



Fauna. — ^As follows : 



Anthaspidella disooidalis, new species. 

 Orthis callifframma orthamtonites 



von Buch. 

 LopJiospira aojii, new species. 

 Lophospira grabaui, new species. 

 Lophospira kangyaoensis, new species. 

 Lophospira manchuriensis, new species. 

 Lophospira cf . otveni Ulrich and Sco- 



field. 



Lophospira producta pagodai, new 



variety. 

 Lophospira turritiformis, new species. 

 Lophospira yentaiensis, new species. 

 Eotomaria barbouri (Grabau). 

 Eotomaria ulrichi, new species. 

 Solenospira sp. 



Correlations. — From the presence of Lophospira and other gastro- 

 pods it is clear that the Kangyao formation is the stratigraphic 

 equivalent of the lower portion of the Stones River (about Mosheim 

 stage) of North America. 



CANADIAN SYSTEM 



The Canadian is represented in South Manchuria by only one 

 formation, at least so far as beds definitely determinable as such from 

 their contained fossils are concerned. 



