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On the hettangian sinemurian boundary in extra carpathian poland a discussion



On the hettangian sinemurian boundary in extra carpathian poland a discussion



Bulletin de l'Academie Polonaise des Sciences Serie des Sciences de la Terre 23(2): 119-122



Problems of the Jurassic Hettangian-Sinemurian boundary in view of palynological data are discussed. The arguments of Karaszewski are thought invalid for 2 reasons: the scarcity and limited value of floral evidence as compared with ammonite evidence, and the lack of correlation between floral and ammonite data [Nathorstisporites hopliticus, Thaumatopteris schenki and Aratrisporites minimus are mentioned.].

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Accession: 006027614

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