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| 平凉安国镇六盘山群介形类 | |
| 引用本文： | 李祖望. 平凉安国镇六盘山群介形类[J]. 甘肃地质, 1995, 4(2): 10-21,T003 |
| 作者姓名： | 李祖望 |
| 作者单位： | 甘肃省煤田地质勘探公司地质研究所 |
| 摘 要： | 平凉安国镇六盘山群的介形类化石采自和尚堡组、李洼峡组与马东山组，计１０属２２种（含６新种、１新亚种、３未定种）。自下而上可分为：Ｃｙｐｒｉｄｅａ（Ｕｌｗｅｌｌｉａ）－Ｄａｍｏｎｅｌｌａ组合，时代属中上凡兰吟期；Ｃｙｐｒｉｄｅａ（Ｃｙｐｒｉｄｅａ）－Ｚｉｚｉｐｈｏｃｙｐｒｉｓ组合，时代属豪特里维一巴列姆期及Ｃｙｐｒｉｄｅａ－Ｌｉｕｐａｎｓｈａｎｉａ组合，时代属阿普第期。 |
| 关 键 词： | 安国镇 六盘山群 早白垩世 介形类组合 |
OSTRACODA IN LIUPANSHAN GROUP FRON THE ANGUOZHEN OF PINGLIANG CITY,GANSU |
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| Li Zuwang. OSTRACODA IN LIUPANSHAN GROUP FRON THE ANGUOZHEN OF PINGLIANG CITY,GANSU[J]. Acta Geologica Gansu, 1995, 4(2): 10-21,T003 | |
| Authors: | Li Zuwang |
| Affiliation: | Li Zuwang (Geological Institute,Coal-field Geological Prospecting Company of Gansu Lanzhou 730000) |
| Abstract: | In this paper,author described the ostracoda which was from the Liupanshan Group ofthe Anguozhen of Pingliang,Heshangpu,Liwaxia and Madongshan Formations and which isbelonging to 22 species in 10 genera,and among which there are 6 new species, 1 new sub-species and 3 uncetermined species.The ostracoda of the Liupanshan Group could be divided into three assemblages in as-cending order as follows:1.Cypridea(Ulwellia )-Damonella Assemblage of Middle to Upper Valanginian age;2.Cypridea(Cypridea)-Ziziphocypris Assemblage of Hauterivian-Barremian age; 3. Cypridea-Liupanshania Assemblage of Aptian age. |
| Keywords: | The Anguozhen The Liupanshan Group The Early Cretaceous Ostra-coda assemblage |
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