藏东八宿怒江桥—邦达一带嘉玉桥群研究的新进展

    NEW ADVANCE IN THE STUDY OF THE JIAYUQIAO GROUP IN THE NUJIANG BRIDGE BAMDA AREA,BAXOI,EASTERN TIBET

    • 摘要: 在西藏八宿怒江桥—邦达一带嘉玉桥群中发现较丰富的化石,其中腕足类有:Neospirifer,Syringothyris?Asyrinxia,Spirifer;牙形石:Palmatodeladelicutula,Palmatolepisgracilissig moidalis,Spathognathoduscf.Stabilis,Polygnathuspurus;孢子:Leigatosporitisvulgaris,Crasisporatrychera,Sulcatisporitesovatus,Limitisporites,Leiotriletes等。据此对嘉玉桥群的划分和时代进行了重新厘定。

       

      Abstract: Abundant fossils have been found in the Jiayuqiao Group in the Nujiang Bridge Bamda area,Baxoi,eastern Tibet.They include the brachiopods:Neospirifer,Syringothyris?Asyrinxia and Spirifer;conodonts:Palmatodella delicutula,palmatolepis gracilis sigmoidalis,Spathognathodus cf.stabilis and Polygnathus purus;spores:Leigatosporites,Vulgaris,Crassispora trychera,Sulcatisporites ovatus,Limitisporites and Leiotriletes.In addition,there are also lamellibranchs and gastropods. The above mentioned fossils were first discovered in the Nujiang Bridge Bamda area,Baxoi.They are of important significance for the subdivision of the Jiayuqiao Group.

       

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