| 甘肃玉门红柳峡早白垩世下沟组的介形类 |
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| 引用本文： | 胡艳霞.甘肃玉门红柳峡早白垩世下沟组的介形类[J].微体古生物学报,2004,21(4):453-456. |
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| 作者姓名： | 胡艳霞 |
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| 作者单位： | 中国科学院南京地质古生物研究所,南京,210008 |
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| 摘 要： | 本文描述了甘肃玉门红柳峡下沟组的介形类化石共5属4亚属、13种。其中1新属、6个新种、1个比较种。根据介形类特征和地理分布，推测下沟组的时代为早白垩世巴列姆期；同时结合玉门红柳峡下沟组的岩性特征，认为该组为淡水微咸水河湖相沉积。
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| 关 键 词： | 介形类 早白垩世 新属 红柳 化石 淡水 新种 湖相沉积 岩性特征 甘肃 |
EARLY CRETACEOUS OSTRACODS FROM THE XIAGOU FORMATION OF HONGLIUXIA IN THE YUMEN AREA,GANSU OF NW CHINA |
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| HU Yan-xia.EARLY CRETACEOUS OSTRACODS FROM THE XIAGOU FORMATION OF HONGLIUXIA IN THE YUMEN AREA,GANSU OF NW CHINA[J].Acta Micropalaeontologica Sinica,2004,21(4):453-456. |
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| Authors: | HU Yan-xia |
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| Abstract: | The ostracods studied in the paper include 5 genera and 4 subgenera. They are Timiriasevia, Rhinocypris, Cypridea (Cypridea), Cypridea (Morinia), Cypridea (Pseudocypridina), Cypridea (Yumenia), Candona and Jiuquania;of which one genus and 6 species are new. Based on palaeontological character and geographical distribution of these ostracods, the Xiagou Formation is regarded as the Barremian of the Early Cretaceous in age. In addition, the lithologic characteristics of the Early Cretaceous strata in Hongliuxia, indicate that the Xia-gou Formation bearing ostracods might have deposited under the shallow fresh to brackish lacustrine or fluvial environments. |
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| Keywords: | Ostracods Xiagou Formation the Early Cretaceous Hongliuxia Gansu |
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