(0 4 Palxontologia Sinica Ser. B 



Couling from the neighborhood of Tsingchou-Fu, Kiaochow, Shantung. Crick however 

 did not identify his specimens specifically, referring to one as closely allied to Actinoceras 

 (Ormoceras) tenuifilum Hall from the Black River formation of New York, and to another 

 as possibly representing the genus Gonioceras, a reference which now appears to be pro- 

 bably correct. Besides the cephalopods, Crick mentioned the occurrence of several small 

 brachiopods. According to Buckman " the general appearance suggests Orthis (Dalma- 

 nella) tf.studinaria Dalman, an Ordovician species"*). This is the first published 

 demonstration of the Ordovician age of these limestone in north China, In 1906 Th. 

 Lorenz ** described the following species from the Ordovician of Shantung the first three 

 from Ho-shan the fourth from Santefan. 



1. Asaphus bcehmi Lorenz. 3. Hyolithes sp. 



2. Madurea logani Salter. 4.^ Plectambonites sericeus (Sowerby). 



Freeh (in Richthofen V p. 14) referred the first three of these to the Middle 

 Ordovician the fourth to the Upper Ordovician. 



In their investigations of the geology of parts of northern China which appeared 

 before Freeh's monograph, -Bailey Willis and Elliott Blackwelder (in 1903-1904) recog- 

 nized that the greater part of von Richthofen 's Kohlenkalk was to be referred to the 

 Ordovician. Professor Stuart Weller, of the University of Chicago, who studied the 

 fossils collected by Blackwelder, recognized the existence of the cephalopod genus 

 Orthoceras, the gastropods Madurea? or Helicotoma? and Lophospira, the trilobite Asaphus?, 

 and the brachiopods Strophomena and Orthis (Dalmanella?) in the Ordovician rocks of 

 Shantung but he was unable to make specific determinations because of the poor state of 

 preservation of the fossils. He however described a number of species collected by 

 Blackwelder in the Yangtze region (south China) *** and recognized their affinities with 

 European Middle Ordovician species. Previously, several authors had described Ordovi- 

 cian fossils from south China among them S. P. Woodward (1856) Kingsmill (1869) and 

 Grieve (1887). The first described the well-known "Pagoda stone ' : as Orthoceras 

 sp. and this was later redescribed by Foord as Orlhoceras chinense Foord (1888). Kayser 

 and Freeh also described a number of Ordovician species from southern China, (v. 

 Richthofen Vols. IV and V) and a number of these have since been redescribed with 

 others by H. Yabe and I. Hayasaka in their work "Palaeontology of South China" 

 (1920). Several Ordovician species from south China were also described and recorded 



*) Crick loc. cit p. 483. 



**) Beitrage zur Geologie und PaUeontologie von Ostasien, pt II pp 84-90 pi VI. 



***) For stratigraphic studies the Yangtzekiang forms the approximate dividing line between North and South 

 China. 



