Middle Permian (Guadalupian) Fusulines from the Xilanta Formation in the Gyanyima area of Burang County, southwestern Tibet, China

Middle Permian (Guadalupian) Fusulines from the Xilanta Formation in the Gyanyima area of Burang County, southwestern Tibet, China
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中国西藏自治区西南部普兰县嘉依玛地区西兰塔组中二叠统(瓜达鲁普世)富苏系

DOI:
10.47894/mpal.55.5.02
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发表时间:
2009
期刊:
影响因子:
1.5
通讯作者:
Shen Shuzhong
Shen Shuzhong
中科院分区:
地球科学4区
文献类型:
--
作者:
Zhang Yichun;Wang Yue;Shen Shuzhong

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本文报道了藏西南普兰县干依玛地区中二叠统西兰塔组(Guadalupian)中的一个丰富的类动物群。共鉴定出9个属:Lantschichites,Kahlerina,Nankinella,Yangchienia,Chusenella,Verbeekina,Armenina,Paraverbeekina和Neoschwagerina。SP成立。该动物群表明,在Kahlerina,Lantschichites和Neoschwagerina共存的米甸时代。在古生物地理学上,该动物群与来自西藏拉萨拉外来石灰岩块的动物群非常相似,两者都类似于西特提斯省西西米里大陆已知的fusuline组合。然而,在动物群中没有Afghanella和Sumatrina表明,Ganyima石灰岩块以及Lasaila异国情调的石灰岩块,阿曼的Batain平原和巴基斯坦的盐岭,在中二叠世受到相对凉爽的水的影响。
This paper reports a diversified fusuline fauna from the Middle Permian (Guadalupian) Xilanta Formation in the Gyanyima area, Burang County, southwestern Tibet, China. Nine genera, Lantschichites, Kahlerina, Nankinella, Yangchienia, Chusenella, Verbeekina, Armenina, Paraverbeekina and Neoschwagerina are recognized.Anew species Yangchienia gyanyimaensis n. sp. is established. This fauna indicates a Midian age in terms of the coexistence of Kahlerina, Lantschichites and Neoschwagerina. Paleobiogeographically, the fauna closely resembles that from the Lasaila exotic limestone block of Tibet, both resemble the fusuline assemblages known from the western Cimmerian continents in the Western Tethys Province. However, the absence of Afghanella and Sumatrina in the fauna suggests that the Gyanyima limestone block as well as the Lasaila exotic limestone block, the Batain plain of Oman and the Salt Range of Pakistan, were affected by relatively cool water during the Middle Permian.
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