南天山西部泥盆纪Zdimir腕足动物群的发现  

DISCOVERY OF THE BRACHIOPOD ZDIMIR FROM THE DEVONIAN IN THE WEST OF SOUTH TIANSHAN

作　　者：陈秀琴[1] 廖卓庭[1] 

机构地区：[1]中国科学院南京地质古生物研究所,南京210008

出　　处：《古生物学报》2006年第3期351-358,共8页Acta Palaeontologica Sinica

基　　金：国家自然科学基金(No.40472007);特殊学科基金资助课题。

摘　　要：新疆乌恰县西部斯木哈纳边境口岸北侧边境线附近含Zdimir腕足动物群的中厚层灰黑色生物碎屑灰岩一直被视为中泥盆统托格买提组。作为一个岩石地层单位,托格买提组的含义应该是分布在托格买提东一带及阿赖山东部以片岩、千枚岩、石英砂岩或以厚层灰岩为主、含腕足动物Stringocephalus,Bornhardtina和珊瑚Temnophyllum,Neospongophyllum等化石群的地层,主体时代为Givetian期。斯木哈纳边境口岸北侧边境线附近中厚层灰黑色生物碎屑灰岩与托格买提组的岩性差异较大,应另建新组名。对Zdimir动物群详细研究后证实,这套地层的时代大致为早泥盆世晚期(Emsian期)。The braehiopod genus Zdimir is widely distributed in Southwest China and South Xinjiang. Its age ranges from late Early Devonian to early Middle Devonian. The present specimens were collected from the medium-thick, grey-black bioelastie limestone near the border of Simuhana of western Wuqia, western part of the Dongalaishan, South Tianshan, which was assigned as ＂Middle Devonian Tuogemaiti Formation＂ over the past years. However, research on the braehiopod Zdimir fauna and corals provide a late Early Devonian age for these beds. The lithologieal eharaeters eontaining the Zdimir fauna are quite different from that of the real Middle Devonian Tuogemaiti Formation in the eastern part of the Dongalaishan to Kuokeshalei with Stringocephalus and Bornhardtina fauna, so a new formation should be established for these bioelastie limestone.

关 键 词：Zdimir 腕足动物群 泥盆纪 南天山西部 

分 类 号：Q915[天文地球—古生物学与地层学]