THE LARGER FAUNAL HORIZONS. 54 
Anomocare sp. (C25) Anomocarella tutia (C 19) 
Anomocarella chinensis (C62) Dolichometopus deois (C19) 
Anomocarella temenus (C 22) Dolichometopus dirce (C24) 
Anomocarella trogus (C25) 
Above this horizon the fauna again changes. The trilobitic genera Dory- 
pyge, Dolichometopus, and Solenopleura drop out and the genera Damesella, 
Blackwelderia, and Teinistion foreshadow the rich and in many respects unique 
fauna of the Ku-shan shale. 
This fauna in the upper horizon of the Ch’ang-hia limestone in Shan-tung 
contains the following: 
Acrotreta pacifica (C12) Pterocephalus asiaticus (C 12) 
Teinistion alcon (C 12) Inouyia acalle (C12) 
Blackwelderia alastor (C12) Tnouyia ? regularis (C73) 
Blackwelderia cilix (C73) Lisania ajax (C 12, C40) 
Damesella bellagranulata (C 13) Anomocarella tutia (C 12) 
Damesella blackwelderi (C12, C13, C14, C 40) 
In the Ku-shan shaly beds, just above the beds containing the preceding, 
the following occur: 
Obolus (Westonia) blackwelderi (C6) Stephanocare ? sp. undt. (C6) 
Dicellomus parvus (C6) Blackwelderia cilix (C55) 
Acrothele ? minuta (C6) Blackwelderia sinensis (C6) 
Straparollina sp. undt. (C55) Drepanura ketteleri (C6, C55) 
Agnostus douvilléi (C6, C55) Drepanura premesnili (C6, C55) 
Redlichia sp. undt. (C6) Ptychoparia (Emmrichella) bromus (C6) 
Stephanocare ? monkei (C6) Liostracina krausei (C6) 
Stephanocare richthofeni (C6, C55) Shantungia spinifera (C6) 
Stephanocare sinensis (C6) 
This assemblage of genera and species forms a varied and unique fauna, 
which has little in common with the faunas above and below it in the strata. 
It is a local phase of the Cambrian fauna corresponding somewhat to one of 
the subdivisions of the Middle Cambrian fauna of western North America as 
represented by the fauna of the Stephen formation of British Columbia 
[Walcott, 1908c, pp. 243-244, plates I-IV; 1908e, pp. 210, 211]. In each there 
are trilobites with large pygidia. Damesella and Neolenus, respectively, are 
typical examples, and there are several genera not found at other horizons or 
in other countries. 
The Middle Cambrian fauna of China, like that of western North Amer- 
ica, is marked by the absence of the genus Paradoxides. Fortunately there 
are other genera that serve to connect the Paradoxides fauna of the Atlantic 
Province with the Dorypyge fauna of the Pacific Province. Dorypyge is associ- 
ated with Paradoxides, Solenopleura, Anomocare, etc., in northwestern Europe 
[Gronwall, 1902, plates 3,4]. In China, Dorypyge [see Locality 357, p. 26] is 
found with Solenopleura, Anomocare, Dolichometopus, and other genera associ- 
ated with Paradoxides in the Atlantic Province. The order of stratigraphic 
succession of the Dorypyge fauna is essentially the same in the two provinces, 
