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西宁、民和盆地位于青海东部、甘肃兰州西部,是祁连褶皱东端南侧的山前坳陷盆地,侏罗纪——第三纪陆相地层发育良好。本文是作者近十年来系统研究该区中侏罗世——第三纪地层及介形虫、轮藻化石的成果。文章对西宁、民和盆地中侏罗世——第三纪地层作了简要介绍,分析了化石组合特征及相关地层的时代,对地层中所含的介形虫、轮藻化石进行了全面系统的鉴定和描述,共得介形虫化石39属、214种,其中包括2个新属、106个新种;轮藻31属、133种,其中包括1个新科、3个新属、66个新种。
The Xining and Minhe basins are located in the eastern part of Qinghai and western Lanzhou in Gansu. The basin is a piedmont piedmont basin to the south of the eastern end of the Qilian fold. The Jurassic-Tertiary continental facies developed well. This article is the author of the last decade to systematically study the Jurassic - Tertiary strata and ostracods, charophytes fossils results. In this paper, we briefly introduced the Middle Jurassic-Tertiary strata in Xining, Minhe Basin, and analyzed the characteristics of fossil assemblages and related stratigraphic times. We conducted a comprehensive and systematic survey of the ostracods and slug fossils contained in the strata The results showed that there were 39 genera and 214 species of ostracod fossils, including 2 new genera and 106 new species, 31 genera and 133 species of Charophytes including 1 new family, 3 new genera and 66 New species.