Transactions and proceedings of the Palaeontological Society of Japan
Online ISSN : 2186-0955
Print ISSN : 0031-0204
ISSN-L : 0031-0204
Volume 1941, Issue 21
Displaying 1-8 of 8 articles from this issue
  • Jiro MAKIYAMA, Tamotu NAKAGAWA
    1941 Volume 1941 Issue 21 Pages 35-39
    Published: 1941
    Released on J-STAGE: March 18, 2011
    JOURNAL FREE ACCESS
    Of the 80 species of Foraminifera listed above, notes on new species and some indeterminable forms are given in the Japanese lines, while the new genera would be interesting to micro-palaeontologists of all countries.
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  • On the Tertiary Platanus from Hokkaidô and Karahuto (Preliminary Report)
    Saburo OISHI, Kazuo HUZIOKA
    1941 Volume 1941 Issue 21 Pages 40-42
    Published: 1941
    Released on J-STAGE: March 18, 2011
    JOURNAL FREE ACCESS
    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)Racernosa group, leaf deeply lobate, (2) Aceroides-occidentalis-orientalis group, leaf shallowly lobate, (3) Guillelmae group, leaf not lobate or obsoletely lobate, and (4) Basilobata 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.
    Hokkaidô: Woodwardia Sandstone.
    Karahutô: Naibuti coal-bearing beds.
    Urahoroian Stage.
    Syakubetu coal-bearing beds in eastern Hokkaidô.
    Kawabataian Stage (Miocene).
    Hokkaidô: Kayanuma coal-bearing beds of the Kunnui Series in southwestern Hokkaidô (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 Tyôsen). 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 Hokkaidô 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, Hokkaidô Imperial University
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  • On the Tertiary Marlea (=Alangium) from Hokkaidô and Karahuto. (Preliminary Report)
    Saburo OISHI, Kazuo HUZIOKA
    1941 Volume 1941 Issue 21 Pages 43-45
    Published: 1941
    Released on J-STAGE: March 18, 2011
    JOURNAL FREE ACCESS
    There are about. eight 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 ilokkaido, while the latter the southern Kyusyfi (Ni.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. platawfolia, while the last one is the type similar to Al. chinensis. Al. basitruncata and M. basiobliqua have been derived from the Woodwardia Sandstone of the Isikari Series of Hokkaido (lsika, rian Stage ; Palaeogene), M. kusiroensis from the Syakubetu coal-bearing beds of the TJrahoro Series of Hokk. aidli (Urahorian Stage; Oligocene-Miocene) and M. taiheiensis from the Esutoru coal-bearing bels of Karahuto (Kawabataian Stage; Miocene).
    In 1939, KRYSHTOFOVICH and BORSUS brought Ficus tiliaefolia (Al. BR.) HEER and Biittneria 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 Alagium (=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 flota of Hokkaidô 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, Hokkaidô Imperial University.
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  • Toshio SUGIYAMA, Hirosi OKANO
    1941 Volume 1941 Issue 21 Pages 46-50
    Published: 1941
    Released on J-STAGE: March 18, 2011
    JOURNAL FREE ACCESS
  • Teiichi KOBAYASHI
    1941 Volume 1941 Issue 21 Pages 51-57
    Published: 1941
    Released on J-STAGE: March 18, 2011
    JOURNAL FREE ACCESS
  • Koiti SUZUKI
    1941 Volume 1941 Issue 21 Pages 58-61
    Published: 1941
    Released on J-STAGE: March 18, 2011
    JOURNAL FREE ACCESS
  • Motoki EGUCHI
    1941 Volume 1941 Issue 21 Pages 62-65
    Published: 1941
    Released on J-STAGE: March 18, 2011
    JOURNAL FREE ACCESS
    The simple corals were collected by Mr. W. HASHIMOTO from the Sumagui formation developed on Mindoro Island in the Philippines. His collection proved to contain the following species: Falbellum transversale MOSELEY, Acanthocyathus grayi MILNE-EDWARD3 et HAIME, Citharocyathus conicus ALCOCK, Hettrocyathus aequicostatus MILNE-EDWARDS et HAIME, Anthemiphyllia dentatus (ALCOCK), Acanthophyllia cf. deshayesiana. MICHELIN, Trochocyathus (Thecocyathus) hanzawai YABE et Ecucin, Heteropsammia michelinii MILNE-EDWARDS et HAIME, Balanophyllia gigas (BRUGGEMANH) ORST, Goniastrea aff. retiformis LAMARCK, Furigia sp.(broken fragment), and Fungia sp.(Cycloseris form), F. aft. patelliformis BOSCHMA. The last mentioned three are reef-building corals, and the others are all deep-sea corals.
    All except Trochocyathus (Thecocyathus) hanzawai YABE et EGUCHI are now living in the adjacent waters of the Philippine Islands, and all except Acanthocyathus grayi MILNE-EDWARDS et HAIME, Acanthophyllia cf. deshayesiana MICHELIN and Heteropsammia michelinii MILNE-EDWARDS et HAIME are represented in the Ryukyu limestone formation of Kikai-zima, Ryukyu Islands.
    Acanthocyathus grayi, according to UMBGROVE is a synonym Acanthocyathus malayicus GERTH, however, from a study of numerous specimens from the Pliocene deposits at Tonohauna, Tosa Province, it is certain that the former is not a synonym of the latter.
    Details will be published at a later date.
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  • Motoki EGUCHI
    1941 Volume 1941 Issue 21 Pages 66-68
    Published: 1941
    Released on J-STAGE: March 18, 2011
    JOURNAL FREE ACCESS
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