RESEARCH IN CHINA. 



Distribution of Carboniferous invertebrate fossils from China collected by the Carnegie 



Expedition. 



A. group of pre-Pennsylvanian (?) faunas, East Ssi-ch'uan. 



B. groups of Pennsylvanian faunas- i. 2. 3. 4; 7; 17; 16 from East Ssi-ch'uan; 20 from Shan-si; 69 and 59 from Shan-tung. 



C. group of post-Pennsylvanian (?) faunas from East Ssi-ch'uan. 



