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数学
DISCOVERY OF Autunia conferta (STERNBERG) KERP ON NORTHERN MARGIN OF TARIM PLATE
<正> Callipterid is an important and highly heterogeneous group of fossil plants in the Permian continental strata of the northern hemisphere, in which Callipteris conferta(Sternberg)Brongniart is the most famous representative because its first appearance in the strata was considered as an index fossil for the beginning of the Permian terrestrial depos-
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Chinese Science Bulletin
1990年13期

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