MIDDLE AND UPPER ORDOVICIAN CHITINOZOAN ASSEMBLAGES FROM THE KURUKTAG AREA,NORTHEASTERN TARIM BASIN, CHINA

摘要

1 INTRODUCTIONOrdovician strata crop out mainly in the Kalpin area of northwestern Tarim and in the Kuruktag area of northeastern Tarim. In northeastern Tarim, Ordovician chitinozoans were known only from the Tieganlike section and borehole Weima-1, at the border of the Kuruktag Basin (Geng, unpublished data). Detailed biostratigraphical studies have been carried out in the Kuruktag area by Zhong and Hao (1990) and Zhou et al.(1992). However, so far, no chitinozoan investigations have been carried out in this area.