Microfossils in Conophyton from the Soviet Union and Their Bearing on Precambrian Biostratigraphy

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Science  09 Jul 1976:
Vol. 193, Issue 4248, pp. 143-146
DOI: 10.1126/science.193.4248.143


Silicified specimens of the Vendian (late Precambrian) "index fossil" Conophyton gaubitza from South Kazakstan contain a diverse assemblage of well-preserved cyanophytic and apparently eukaryotic algae, the first stromatolitic microbiota to be reported from the Soviet Union. Unlike the stromatolites in which they occur, the microorganisms that apparently built this form of Conophyton did not become extinct at the end of the Precambrian.