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- W1997998520 abstract "A microfossil assemblage has been detected in phosphorite cherts from the Dengying and Meishucun Formations (610 Ma) of the Sinian System in Jinning County, Yunnan Province, southwest China. A unique type (mode) of microfossil preservation — collophanite or apatite, or even in rare cases, chert-replacement — is reported here for the first time. The size frequency statistics for the assemblage are consistent with the results obtained by Schopf. The assemblage includes 18 genera and 20 species, among which 4 genera and 10 species are new. The assemblage consists of solitary and colonial spheroidal cells and septate or non-septate filaments, mainly Cyanophyta, especially Chroococaceae, Oscillatoriaceae and Nostocaceae. The microfossils described are Bigeminococcus grandis n. sp., Myxococcoides kingii, Myxococcoides grandis, Palaeoanacystis vulgaris, Archaeophycus venustus n.g. et sp., Eomycetopsis robusta, Circulinema jinningense n.g. et sp., Circulinema muirae n.g. et sp., Cyanonema infliatum, Obruchevella parva, Oscillatoriopsis awramikii n. sp., Palaeolyngbya oehlerii n. sp., Palaeolyngbya spiralis n. sp., Palaeotubulus lamellosus n.g. et sp., Veteronostocale sp. 1, Veteronostocale sp. 2, Allantomorphus septatus n.g. et sp., Clonophycus vacus n. sp., Archaeotrichion contortum, Rhienonema antiquum, Micrhystridium setulerum and Protosphaeridium densum." @default.
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- W1997998520 date "1983-12-01" @default.
- W1997998520 modified "2023-09-26" @default.
- W1997998520 title "The Sinian microfossils from Jinning, Yunnan, south west China" @default.
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- W1997998520 doi "https://doi.org/10.1016/0301-9268(83)90033-5" @default.
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