柴达木盆地北缘石灰沟晚石炭世的四射珊瑚

青海省柴达木盆地北缘晚石炭世地层出露完好，四射珊瑚化方丰富。本文研究了该区晚石炭世四射珊瑚２６属，４９种和亚种，１０个未定种。自下而上建立了５个四射珊瑚组合带：１Ｌｉｔｈｏｓｔｒｏｔｉｏｎｅｌｌａ－Ｔｈｙｓａｎｏｐｈｙｌｌｕｍ组合带；２Ｃｇａｔｈａｘｏｍｉａ－Ｒｏｔｉｐｈｙｌｌｕｍ组合带；３Ｐｒｏｔｏｉｖａｎｏｖｉａ－Ａｍｐｌｅｘｕｓ组合带；４ＮｅｏｋｏｎｉｃｋｏＰｈｙｌｌｕｍ－Ｋｏｎｉｎｃｋｏｐｈｇｌｌａｍ组合带；５Ｐｓｅｕｄｏｚａｐｈｒｅｔｏｉｄｅｓ－Ｌｏｐｈｏｃａｒｉｎｏｐｈｙｌｌａｍ组合带。

The Late Carboniferous Rugose Corals from Shihuigou on the North Margin of the Qaidam Basin

The late Carboniferous rugose corals described in this paper were collected from the Shihuigou area on the northmargin of the Qaidam hasin. They contain 26 genuses,and 49 species and subspecies (including l7 new species and 4subspecies,and may be divided into five coral assemblage zones. They belong to the Keluke Formation of early LateCarboniferous and the Zhabusagaxu Formation of late Late Carboniferous. In this area, the Late Carboniferous coral fauna is different from that in South China,but it is related to the East Europe an coral fauna and especially simisar to the bonets basin coral fauna.