Vol I. Grahau — Orduviciait, Fossils from North China (i) 5 



by Martelli (1901) Mansuy (1902) BroMn (1913) and G. Pellizzari (1913). 



In all these studies however, only one new species was recognized in addition to 

 the Actinoceras from the Ordoviciah of north China, namely Asaphus hrliml Lorenz from 

 Shantung, though a numher of generic determinations were made and a few forms 

 identified with European species. Actinoceras richthofeni has remained up to the present 

 the only specifically identified cephalopod known from the Ordovician of north China, 

 hut this species was definitely known only from Manchuria. 



During the progress of investigations carried on by the Geological Survey of 

 China, a considerable number of specimens of Actinoceras was obtained from the 

 provinces of Chihli and Shantung. Material was also sent to the Survey by residents in 

 various districts. Only a few other fossils were however olitained. Early in the present 

 year some additional species were obtained from Tangshan in the Kaiping coal basin by 

 Messrs. Fred. K. Morris, Geo. B. Barbour and A. C. Terrill, and later, a survey expedi- 

 tion, in charge of the author, began a systematic study of the stratigraphy of certain parts of 

 the Kaiping basin. The party included Professor George B. Barbour of Yenching college 

 (Peking Christian University) and Messrs. Y. C. Sun and S. C. Choan of the Survey. In 

 the field we were joined by Dr. F. F. Matthieu, Geologist of the Kailan Mining 

 Administration and Mr. Jacques Gerard engineer and geologist of the Chaokouchuang 

 mines and later by Mr. C. H. Huang of the Machiakou mining staff *). The greater part 

 of the fossils from the upper Ijeds herein described was collected at that time. 



The discovery of the Lower Ordovician fauna of the Ching-wang-tao region north 

 of the Kaiping basin is to the credit of Dr. F. F. Matthieu who placed the material in my 

 hands for description, and with true scientific spirit has deposited the tj'pes and illustrated 

 specimens in the museum of the Survey, where they are accessiljle to all students and 

 specialists. 



The Ordovician species at present known from north China comprise 31 genera 



*). It gives me great pleasure to acknowledge the uuiforni courtesy acd helpfulness of the officers of the various 

 mines notably M. Aleiandre Doquier Chief of Staff Tangshan, M. Maurice Derwiduee Chief engineer of Ihe Chaokouchuang 

 mines and Mr. Ch. P. Huang, Chief engineer of the Machiakou mines. To Messrs. Matthieu, Gerard and C. H. Huang we are 

 also greatly indebted for efficient aid and guidance in our field-work, and to the first for placing at my disposal collections pre- 

 viously and since then made by him, especially in Shantung, and from the Lower Ordovician beds of the Chingwangtao region 

 of east Chihli, this lower fauna having been discovered by him. To Mr. W. S. Nathan president of the Kailan Mining 

 Administration special acknowledgments and (hanks are gladly tendered for his courtesy in giving us unlimited oppoitunity to 

 study the mines and properties in the Kaiping basin under his control, and for putting at our disposal housing accomodations, 

 transportation and mechanical assistance. 



