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- 要約等Selected twenty-one species of heteromorph ammonites from the Upper Cretaceous of Hokkaido are described,...... established. Others are redescribed to improve the previous knowl...... every species the stratigraphic ......sely recorded. The described spec......ly referred to the Nostoceratidae and the Diplomoceratidae. They show greater ......racters beyond the previous conceptions. Some preliminary re......re given about the implication of the various aberra...... conclusion on the natural history of the heteromorph groups. This paper is dedicat...
- 参照A New Species of the Heteromorph Ammonoid Didymoceras from the Upper Cretaceous Izumi Group in...... A New Species of Yezoceras (Amm......ostoceratidae) from the Coniacian in the Northwestern P......rmaites, a New Heteromorph Ammonoid Genus from the Turonian (Upper Cretaceous) of Hokkaido, Japan 長崎半島東岸長......c relationship of two species of Hyphantoceras ......oceratidae) in the Cretaceous Yezo Group, northern Japan A new species of Eubostrychocer......ostoceratidae) from the lower Campanian in the northwestern P......ampanian (Late Cretaceous) heteromorph ammonoid genus from Hokkaido, Japan A new species of Anagaudryceras (Ammonoidea, G...
- 出版者（掲載誌）Faculty of Science, Kyushu University
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