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地质学报 1932

ONTHESEEDSOFTHEPTERIDOSPERMEMPLECTOPTERISTRIANGULARISHALLE

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Abstract:

RecentstudiesoftheLatePalaeozoicflorasofChinahavebroughttolightacomparativelygreatnumberofPteridospermswithattachedseeds.FromthePermianofShansihavebeendescribednolessthanfivespeciesofseed-bearingfronds,whereasthetotalnumberofestablishedcasesofconnexion

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