保山—腾冲地区的冷水珊瑚Lytvolasma动物群

ON THE COLD WATER CORAL Lytvolasma FAUNA IN BAOSHAN-TENGCHONG REGION

云南西部保山—腾冲地区中晚石炭世—早二叠世冈瓦纳相地层发育齐全，冰海相沉积物和冷水珊瑚动物分布广泛。其中，冷水珊瑚Ｌｙｔｖｏｌａｓｍａ动物群和冰海相沉积物在西藏的珠峰和申扎地区的同期地层中也很发育，完全可以与本区对比，表明中晚石炭世—早二叠世时期本区与珠穆朗玛峰、申扎地区一样，同属冈瓦纳大陆。本文报道了该区Ｌｙｔｖｏｌａｓｍａ动物群的鉴定成果，计有６科７属１４种，其中７个新种、５个未定种。

The middle and late Carboniferous-early Permian strata are completely developed and the ice sea facies sediment and the cold water coral fauna are widespread in the Baoshan-Tengchong region of west Yunnan. And the cold water coral Lytvolasma fauna and the ice sea facies sediment are also developed in the same strata of the Mount Qomolangma and Shenza region of Xizang, which are completely comparable to those of the Baoshan-Tengchong vegion. It shows that both of them are the Gondwana facies strata and belong to the Gondwanaland.According to determination, the Lytvolasma fauna in this region include 6 families 7 genera 14 including 7 sp. nov. and 5 undetermined species. The identification results of them are published in this paper.