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China(Kiangsu) |
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1981 |
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Early Chesterian |
Middle Chesterian |
Oklahoma |
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1971 |
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Middle Frasnian |
Late Frasnian |
Maryland |
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1973 |
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Cenomanian |
Coniacian |
Wyoming |
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1964 |
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Sinian |
Cambrian |
China |
Tian,C. Sinian and Cambrian micropalaeoflora. (In: Palaeontological Atlas of Southwest China, Volume of Microfossils. Edited by Chengdu Institute of Geology and Mineral Resources.) |
1983 |
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Early Cambrian |
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China(Yunnan) |
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1982 |
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Early Ordovician |
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China(Hopei) |
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1982 |
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Aptian |
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Brazil(Maranhao) |
de Lima,M.R. Palynology of the Codo Formation, Region of Codo, Maranhao. |
1982 |
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Early Cambrian |
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USSR(Russian Platform) |
Volkova,N.A. Acritarchs of the Northwestern Russian Platform. (In:Tommotsk age and problems of the Lower Cambrian) |
1969 |
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Aptian |
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Brazil(Maranhao) |
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1982 |
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Ashgillian |
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Portugal |
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1978 |
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Middle Cambrian |
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USSR(Latvian SSR) |
Fridriksone,A.I. Acritarch Baltisphaeridium and its history (?) from the Cambrian sediments of Latvia. (In: Palaeontology and stratigraphy of the Baltic and Byelorussia) |
1971 |
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Early Ordovician |
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China(Hopei) |
Zhong,G. Early Ordovician microflora from the Dawan Formation at Huanghuachang, Yichang. |
1981 |
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Early Cambrian |
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USSR(Baltic) |
Volkova,N.A. et al. Microflora. (In: Upper Precambrian and Cambrian paleontology of the East-European Platform.) |
1979 |
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Late Ladinian |
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Australia(NSW) |
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1970 |
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Arenigian |
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China(Shanghai) |
Hu,Y. Micropalaeoflora from the Early Ordovician in Gaoqiao Region of Shaanxi and its stratigraphic significance. |
1986 |
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Early Cambrian |
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Sweden |
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1990 |