巻号一覧
48 巻, 574 号
選択された号の論文の7件中1～7を表示しています
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澤田 秀穗1941 年 48 巻 574 号 p. 313-321
発行日: 1941/07/20
公開日: 2008/04/11
ジャーナル フリーPDF形式でダウンロード (964K) -
小林 學1941 年 48 巻 574 号 p. 322-331
発行日: 1941/07/20
公開日: 2008/04/11
ジャーナル フリーPDF形式でダウンロード (2237K) -
柴田 勇1941 年 48 巻 574 号 p. 332-335
発行日: 1941/07/20
公開日: 2008/04/11
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藏田 延男1941 年 48 巻 574 号 p. 336-350
発行日: 1941/07/20
公開日: 2008/04/11
ジャーナル フリーThe so-called Torinosu limestone gives rise to many stratigraphical and palaeontological questions Whether one can find any zone- or facies-index in the fossils contained in the limestone is one of the subjects dealt with in this paper., As discussed in the Japanese text, the writer failed to find any index fossil among the four zones of limestone-lenses in the Torinosu series in the Togano basin and its vicinities, but its further study may show that some fossils are restricted to particular facies of sedimentation., Observations were made on the occurrence of the limestone in the area., Facts collected at many places where the limestone masses are exposed made the writer think of there having been coralreefs in a shallow clear sea, while some other facts suggest that they are partly deposits in a shallow sea under saploperic condition.,抄録全体を表示PDF形式でダウンロード (1801K) -
大石 三郎, 藤岡 一男1941 年 48 巻 574 号 p. 351-353
発行日: 1941/07/20
公開日: 2008/04/11
ジャーナル フリーMore than 40 species (of which six are living) of Platanus are known in the world, the oldest known being the Cretaceous., They may tentatively be divided into four groups in respect to the foliar characters : (1) Racemosa group, leaf deeply lobate, (2) Aceroides-occidentalis-orientalis group, leaf shallowly lobate, (3) Guillelmae group, leaf not lobate or obsoletely lobate, and (4) Busilobata group, leaf peltate., Of these groups, the foliar characters between (2) and (3) appear to merge gradually from one to another in many cases., Among the Tertiary plants of Hokkaido and Karahuto the present authors discriminated six different types as follows : P., aceroids GOEPP., Isikarian Stage (Palaeogene)., Hokkaido : Woodwardia Sandstone of Central Hokkaido ; Uryu coal-bearing beds of the Uryu coal-field., Karahuto : Naibuti coal-bearing beds., Urahoroian Stage (Oligocene-Miocene)., Hokkaido : Syakubetu coal-bearing beds of eastern Hokkaido., P., Guillelmae GOEPP., Isikarian Stage., Hokkaido : Woodwardia Sandstone., Karahuto : Naibuti coal-bearing beds., Urahoroian Stage., Syakubetu coal-bearing beds in eastern Hokkaido., Kawabataian Stage (Miocene)., Hokkaido : Kayanuma coal-bearing beds of the Kunnui Series in southwestern Hokkaido (as cfr., P., Guillelmae)., Cfr., P., aceroides latifolia KNOWLT., Isikarian Stage., Woodwardia Sandstone of Central Hokkaido., P., Mabutii sp., nov., Urahoroian Stage (Syakubetu coal-bearing beds)., P., sachalinensis ENDO., Isikarian Stage (Naibuti coal-bearing beds of Karahuto)., P., Heeri LESQ., Cretaceous (near Due coal mine, Russian Karahuto)., P., aceroides and P., Guillelmae are common and occur in association in most cases., Cfr., P., Guillelmae occurs from the Neogene beds of the Kayanuma coal mine, and this is the youngest record of fossil Platanus in the Asiatic continent (the authors recently recognized another Neogene Platanus from the Engelhardtia-bed of Tyosen)., P., Mabutii and P., sachalinensis are characterised by having peltate blade., Cfr., P., aceroides latifolia resembles the original specimen but is somewhat imperfect to admit precise comparison., P., Heeri has been recorded only from the Russian Karahuto but not known from Japan., In Hokkaido and Karahuto the development of Platanus began from the Cretaceous and it flourished most in the Palaeogene., It may be certain that it existed also in the early Neogene, but possibly disappeared since that time from these islands., The details may be printed in the Journal of Faculty of Science, Hokkaido Imperial University.,抄録全体を表示PDF形式でダウンロード (488K) -
大石 三郎, 藤岡 一男1941 年 48 巻 574 号 p. 354-356
発行日: 1941/07/20
公開日: 2008/04/11
ジャーナル フリーThere are about eighy living species of Marlea(=Alangium) distributing in Japan, Manchoukuo, China, and palaeotropical region of southeastern Asia., Of these, M., platanifolia SIEB., and ZUCC., and M., chinensis REHDER are living in the Japanese Islands, the northern most limit of the former being Prov., Kitami(N., L., 45°) of Hokkaido, while the latter the southern Kyusyu(N., L., 32°)., The authors recognized four different types of fossil Marlea from the Tertiary rocks of Hokkaido and Karahuto., They are M., basitruncata sp., nov., M., kusiroensis sp., nov., M., taiheiensis sp., nov., and M., basiobliqua sp., nov., The former three are the type of modern M., platanifolia, while the last one is the type similar to M., chinensis., M., basitruncata and M., basiobliqua have been derived from the Woodwardia Sandstone of the Isikari Series of Hokkaido (Isikarian Stage ; Palaeogene), M., kusiroensis from the Syakubetu coal-bearing beds of the Urahoro Series of Hokkaido (Urahorian Stage ; Oligocene-Miocene) and M., taiheiensis from the Esutoru coal-bearing beds of Karahuto (Kawabataian Stage ; Miocene)., In 1939, KRYSHTOFOVICH and BORSUK brought Ficus tiliaefolia (Al., BR., ) HEER and Buttneria aequalifolia (GOEPP., ) MEYER into one species and adopted the generic name Alangium taking the latter specific name., The present authors agree with these Russian authors in that the genus Alangium(=Marlea) is the more adequate generic designation for the named fossil types, yet the present authors bear a different opinion in bringing them into one specific type., Types referable to "Buttneria aequalifolia" are rather common in the Kawabataian flora of Hokkaido and Karahuto, but the comparison with the living types bearing similar foliar characters is now carrying on., The details may be printed in the Journal of Faculty of Science, Hokkaido Imperial University.,抄録全体を表示PDF形式でダウンロード (496K) -
杉山 敏郎, 岡野 寛1941 年 48 巻 574 号 p. 357-361
発行日: 1941/07/20
公開日: 2008/04/11
ジャーナル フリー本邦には三葉蟲類の尾部が北上及び阿武隈兩山地の二疊紀から夫々知られ, 大體廣義のPhilipsiaに同定せられてゐた。最近此外に石炭紀・泥盆紀及びゴトランド紀層からも夫々發見せらるるに至つた。本報告では北上の中里統から産出したPhacopsの尾部の記載をした。この標本は狹義のPhacopsに同定され, 殊にP., latifronsに酷似する諸性質を帶びてゐる。この泥盆紀産の三葉蟲の報告は本邦では初めてである。抄録全体を表示PDF形式でダウンロード (940K)
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