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| 记述滇东震旦系灯影组中的一种古藻化石 | |
| 引用本文： | 陈孟莪,曹瑞骥. 记述滇东震旦系灯影组中的一种古藻化石[J]. 地质科学,1966,7(2): 185-188. |
| 作者姓名： | 陈孟莪 曹瑞骥 |
| 摘 要： | 本文记述的古藻化石,是中国科学院地质研究所刘鸿允、刘钰等1960年夏在滇东马龙县纳章村震旦系灯影组底部采集的。笔者采用古藻类化石微体研究法对标本进行了较详细的研究,发现藻类微体构造保存良好,值得描述。 |
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NOTE ON A NEW SPECIES OF ANCIENT FOSSIL ALGAE FROM THE SINIAN DENGYING FORMATION OF EASTERN YUNNAN |
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| CHEN MENG-E,CAO RUI-JI. NOTE ON A NEW SPECIES OF ANCIENT FOSSIL ALGAE FROM THE SINIAN DENGYING FORMATION OF EASTERN YUNNAN[J]. Chinese Journal of Geology,1966,7(2): 185-188. | |
| Authors: | CHEN MENG-E CAO RUI-JI |
| Abstract: | The collection described in this paper was made in 1960 by Mr.H.Y.Liu from Malong district of eastern Yunnan. phyllum CYANOPHYTA Order chroococcales Family Palaeomicrocystidaceae Vologdin,1958 Genus Palaeomicrocystis Korde,1955 Palaeomicroeystis malongensis Chen et Cao,sp.nov. The stromatolites built by the algae are stubby cylindrical in shape,consisting of more or less symmetricalarched"elementary laminae", with a breadth about 4—6 cm, height less than 6—7 cm.The boundary between"elementary laminae"is indistinctive. The "elementary laminae"are composed of many algal colonies in form and semitrans- parent petrified mucus. These colonies are small dark spots which vary from spheroid to ellipsoid with 0.2— 0.5 mm in diameter.In thin section,the centre part is mostly of colloid,with 1—2 rings at the border part. This species resembles Palaeomicrocystic cabrica Korde,but differs from the latter in having border rings of the colony. Horizon and Locality:Malong district,eastern Yunnan;Dengying formation,Upper Sinian. Holotype:Cat.No.IGAS-00577. |
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