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地质学报 1944
OntheAgeoftheProtolepidodendron-andBothriolepis-BearingFormationsinSouthwesternChina, PP. 216-220 Abstract: Formanyyears,therehasbeenconsiderabledifferenceofopinioninregardtotheageofthehorizonsbearingbothProtolepidodendronandBothriolepisinCentralHunanandEasternYunnan.Iaminfullaccordwiththeviewrecentlyputforwardby.H.C.Wangthattheplant-andfish-bearingserieso
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