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Science 9 July 1976:
Vol. 193. no. 4248, pp. 143 - 146
DOI: 10.1126/science.193.4248.143
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Articles

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

J. WILLIAM SCHOPF 1 and Yu. K. SOVIETOV 2

1 Department of Geology, University of California, Los Angeles 90024
2 Institute of Geology and Geophysics, U.S.S.R. Academy of Sciences, Siberian Branch, Novosibirsk-90, 630090

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.

Submitted on March 8, 1976
Accepted on April 12, 1976


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