"The most serious objection to placing the Lower Shihhotze flora in theLower Permian is the negative evidence presented by the absence of any speciesof Callipteris.As especially pointed out by Gothan,however,Callipteris is
Abstract:
"The most serious objection to placing the Lower Shihhotze flora in theLower Permian is the negative evidence presented by the absence of any speciesof Callipteris.As especially pointed out by Gothan,however,Callipteris is
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斯行健.1935. UBER DAS VORKOMMEN VON CALLIPTERLS CONFERTA STERNB. IN DER UNTEREN SHIHHOTZE SERIE IN CENTRAL-SHANSI[J]. ACTA GEOLOGICA SINICA(English edition),14(4):
