釧路炭田浦幌統春採層産 Woodwardia 及び Metasequoia の2新種に就いて

概要

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Little has been known of the fossil plants from the coal-bearing series of the Kusiro coal-field., This paper deals with the description of an occurrenee of new species of Woodwardia and Metasequoia, W., Sasae and M., Kimurae, derived from the Harutori Bed of the Urahoro Series., W., Sasae difiers from W., Endoana OISHI and HUZIOKA from the Woodwardia sandstone of the Isikari coal-field in that the pinnules have obtuse or rounded apices and the lateral veins anastomose occasionally, while it differs from another allied species, W., Maxoni KNOWLTON, in that the pinnules have entire margin., M., Kimurae is named on some cones which are in accordance in the decussate arrangement of the seminiferous scales to Metasequoia MIKI, but belonging to neither of the known species of this genus., This is the species very close to M., Onukii (ENDO), M., japonica (ENDO), and M., disticha MIKI.,
日本地質学会の論文
1942-08-20