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【Main Contents】
The research on the Cambrian acritarch has been going on for about 70
years, but both extensive and intensive research has been restricted to
those in Europe and North Ameriea. The similar investigation of acritarch
in China started rather late and has been chiefly focused on the boundary
between Precambrian-Cambrian and Cambrian-Ordovician, and there is no
report on the research on the acritarch from the mid and late parts of
the Early Cambrian to Middle Cambrian. In this paper, 7 sections found
in the southwestern region of China are chosen and the acritarch in the
Early and Middle Cambrian are investigated with a fruitful result, filling
in a wide gap in both time range and its regional distribution in these
areas.
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