FAUNAL PROVINCES OF THE CAMBRIAN IN ASIA. 57 



The largest fauna is that of the Shan-tung subprovince. This includes 

 the Cambrian area in Shan-tung and its extension northward in Manchuria. 

 The species common to the Shan-tung and Manchuria areas are: 



Protospongia chloris Orthotheca cyrene Liostracina krausei 



Aficromitra (Iphidella) pannula Ortholheca delphus Shantungia spinifera 



ophirensis Agnostus chinensis Solenopleura agno 



Obolus chinensis Agnostus douvillei Solenopleura beroe 



Obohts damesi Dorypyge richtlwfeni Anomocare megalurus 



Obolus shansiensis Teinistion typicalis Anomocare minus 



Acrothele matthewi eryx Stephanocare sinensis Anomocare subquadratum 



Acrotreta pacifica Blackwelderia sinensis Anomocarella chinensis 



Acrotreta shantungensis Damesella brevicaudata Anomocarella temenus 



Hyolithes cybele Drepanura premesnili Dolichometopus deois 



The Shan-si subprovince 1 has five species of Middle Cambrian fossils 

 and one Upper Cambrian species common to it and to the southern Shan-tung 

 Province area in Shan-tung, as follows: 



LOWER CH'ANG-HIA FAUNA. Obolus obscurus, Obolus shansiensis, Acrotreta shan- 

 tungensis, Agnostus chinensis, Crepicephalus damia. 

 CH'AU-MI-TIEN FAUNA. Plectorthis kayseri. 



With the Manchurian extensions of the Shan-tung Province the Shan-si 

 fauna has five species in common, as follows: 



SHAN-SI AND MANCHURIA. Obolus shansiensis, Acrotreta shantungensis, Orthotheca 

 glabra, Agnostus chinensis. 



In southern China, as previously stated [p. 50], there is no record pointing 

 to a connection between the Punjab-Man-t'o sea and the Lower Cambrian 

 seas of northern Siberia, or western North America. 



In Middle Cambrian time, as stated by Reed, the Spiti fauna is more 

 strongly related to that of western North America than to any other Middle 

 Cambrian fauna [Reed, 1910, pp. 64 and 65]. So far as China is concerned, 

 the northern Indian fauna is that of another faunal province. 



The Cambrian fauna of the Siberian Province includes species that are 

 referred to the Middle Cambrian fauna, and a few that may be tentatively 

 assigned to the Lower Cambrian. Doctor von Toll has identified a number 

 of genera of the Archaeocyathinas [von Toll, 1899, p. 53] that may occur in 

 the upper portion of the Lower Cambrian terrane. The one species of Cos- 

 cinocyathns from China, C. ehira Walcott, occurs in the Middle Cambrian, 

 but this is a very small form and may have been a survival in Middle Cam- 

 brian time of the large Archaeocyathinae fauna of late Lower Cambrian time. 

 In North America the Archaeocyathinae flourished most abundantly in late 

 Lower Cambrian time [Walcott, 18910, pp. 599-602, plates 50-55] on both the 

 eastern and western sides of the continent. Von Toll lists from the Archceo- 

 cyathus limestones of Torgoschino [von Toll, 1899, p. 53], in addition to 

 sixteen species of the Archaeocyathinae, two species of trilobites, Dorypyge 



'The geographic distribution of the Shan-tung, Manchuria, and Shan-si Cambrian rocks is shown by 

 Willis [1907, vol. H, plate 4]. 



