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Discovered in southwest China's Guizhou Province, Weng'an biota features different types of fossils, including various spheroidal fossils, which provide crucial palaeontological evidence for the radiation of multicellular eukaryotes after the termination of the Neoproterozoic global glaciation.

BEIJING, March 16 (Xinhua) -- Weng'an biota could be as old as 609 million years, with a margin of error of 5 million years either side, a study by a group of Chinese scientists suggests.

The study was carried out by scientists including some from the Chinese Academy of Sciences (CAS).

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