吐鲁番盆地鄯善地区中、晚侏罗世介形类

MIDDLE UPPER JURASSIC OSTRACODS FROM THE LIANMUQIN SECTION OF THE TURPAN BASIN

报道吐鲁番盆地连木沁剖面七克台组及齐古组的介形类化石３ 属１０ 种，其中２ 新种１ 未定种：Ｔｈｅｒｉｏｓｙｎｏｅｃｕｍ ？ ｑｉｋｔｉｍｅｎｓｉｓｓｐ ．ｎｏ ．，Ｔｈ．ｈｕｏｙａｎｓｈａｎｅｎｓｉｓ ｓｐ ．ｎｏｖ ．，Ｄａｒｗｉｎｕｌａ ｓｐ ．。根据化石组合面貌，自上而下可建立两个组合，即ＤａｒｗｉｎｕｌａＭｅｔａｃｙｐｒｉｓ 组合和Ｔｈｅｒｉｏｓｙｎｏｅｃｕｍ ？ Ｄａｒｗｉｎｕｌａ 组合，其时代分别为晚侏罗世和中侏罗世。

The present paper deals with Middle Upper Jurassic ostracods collected from Qiktim and Qigu Formations of Lianmuqin section, Turpan Basin, Xinjiang. These fossils comprise six species in three genera. They are Darwinula, Metacypris and Theriosynoecum, in which two species are new. The lower Theriosynoecum? Darwinula assemblage from the Qiktim Formation is considered to be Midldle Jurassic in age and the upper Darwinula Metacypris assemblage from the Qigu Formation belongs to Upper Jurassic.