4 RESEARCH IN CHINA. 
equal age proven. He further states that the age of the rocks containing 
Dorypyge richthofeni, from Wu-lo-pu, is probably the same as that of the 
Quebec group, basing this upon comparisons with species from Utah, which 
he referred to the genus Dorypyge [China, Richthofen, vol. Iv, pp. 31-33]. 
The collections made by the Carnegie Institution of Washington Expedi- 
tion prove that Dorypyge richthofeni occurs in the central and upper portion 
of the Ch’ang-hia formation and is of Middle Cambrian age. Baron von Rich- 
thofen’s means of comparison were with the fauna referred to the Quebec group 
which was at that time supposed to be of Lower Silurian (Ordovician) age. 
Dr. C. Gottsche, in 1886, called attention to the presence of Cambrian 
rocks and fossils in northwestern Korea, south of Wi-won. He published a 
geological section and identified A nomocare planum Dames, Anomocare majus 
Dames, Dorypyge richthofent Dames, and Lingulella cf. nathorsti Linnarsson. 
He also mentions the genera Theca, Orthis, Lingulella (two species), A gnostus, 
Conocephalites, Crepicephalus, and ?Remopleurides, and correlates the forma- 
tion with that of the ““Andrarum limestone’”’ of Scandinavia [Gottsche, 1886, 
pp. 865-867]. 
In 1899 M. Bergeron [pp. 499-516] described the following Cambrian 
fossils from shaly limestones collected in the province of Shan-tung, China: 
Dicellocephalus ? sinensis 
Calymmene ? sinensis 
Drepanura premesnili 
Arthricocephalus chauveaui 
Agnostus douvillét 
Olenoides leblanci 
Of the above we have identified the following from the Ku-shan shale of 
the section made by Mr. Blackwelder: 
Dicellocephalus ? sinensis = Stephanocare 
Calymmene ? sinensis = Blackwelderia 
Agnostus douvilléi 
Olenoides leblanci 
Drepanura premesnili 
From the Cambrian formations of Siberia, Dr. Fr. Schmidt [1886, pp. 
407-424] described the following fossils: 
Agnostus czekanowskit 
Proetus (Phaeton) slatkowskii= Dorypyge 
Cyphaspis sibirica = Solenopleura 
Liostracus ? maydeli= Anomocarella 
Anomocare pawlowskit = Anomocarella 
This fauna was subsequently reviewed by Eduard von Toll [1899, pp. 
21-57], who added the following: 
Confervites primordialis Bornemann 
Archeocyathus acutus Bornemann 
Archeocyathus aduncus Bornemann 
Archeocyathus ijizkii von Toll 
Archeocyathus patulus Bornemann 
Archeocyathus proskurjakowi von Toll 
Archeocyathus sibiricus von Toll 
Coscinocyathus calathus Bornemann 
Coscinocyathus campanula Bornemann 
Coscinocyathus corbicula Bornemann 
Coscinocyathus dianthus Bornemann 
Coscinocyathus elongatus Bornemann 
Coscinocyathus irregularis von Toll 
Coscinocyathus vesica Bornemann 
Coscinocyathus cf. cancellatus Bornemann 
Spirocyathus sp. undt. 
Rhabdocyathus sibiricus von Toll 
Protopharetra sp. undt. 
Helminthoidichnites sp. 
Kutorgina cingulata Billings 
? Obolella chromatica Billings 
Hyolithes sp. undt. 
Microdiscus kochi von Toll 
Microdiscus lenaicus von Toll 
Microdiscus sp. undt. 
Agnostus schmidti von Toll 
