哈密路白山地区黄岗一带原划为大热泉子组中,发现时代属晚二叠世的Palaeanodonta castor,P.fischeri,Palaeomutela urumqiensis,Pneglecta P.verneuili,Oligodon keerjiensis,等淡水双壳类化石,其动物群面貌与乌鲁木齐和吐鲁番上二叠统梧桐沟组双壳动物群相似,相当于Palaeanodonta subcastor-Palaeomutela subparallella组合,时代属晚二叠世吴家坪期.据该套地层中双壳类化石组合、岩性、岩石组合及沉积特征,将该区原划为大热泉子组划为梧桐沟组.以该双壳类动物群研究为基础,进一步讨论该区古环境及北部边缘地层区沉积古地理.%Some Late Permian freshwater bivalve fossils. including Palaeancdonta castor, P.fischeri, Palaeomutela urumqiensis, P.neglecta P.vemeuili and Oligodon keerjiensis are found in Huanggang of Hami.Xinjiang.Thc bivalve fauna is similar to che fauna from Wutonggou Formation of Upper Permian in Urumqi and Turpan, and is corresponding to PalaeanodoNTa subcastor-Palaeomutela subparallella assemblage,so the geological time of the bivalve fauna should be ascenained as Wujiaping stage of Late Permian. According to bivalve fossil asscmblage. rock association and sedimentary characteristics, the strata which is named originally as Darequanzi Formation is revised to WutonSgou Fomiatior.In addition,the Late Permian palaeoenvironment and palaeogeography in Hami and other regions in North China are discussed basing on srudy of the bivalvc fossils.
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