Fossils

Fossils

Online ISSN : 2424-2632
Print ISSN : 0022-9202
ISSN-L : 0022-9202

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Volume 71

Displaying 1-29 of 29 articles from this issue

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[title in Japanese]

Article type: Cover
2002 Volume 71 Pages Cover1-
Published: March 29, 2002
Released on J-STAGE: October 03, 2017

DOIhttps://doi.org/10.14825/kaseki.71.0_Cover1

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[title in Japanese]

Article type: Appendix
2002 Volume 71 Pages App1-
Published: March 29, 2002
Released on J-STAGE: October 03, 2017

DOIhttps://doi.org/10.14825/kaseki.71.0_App1

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[title in Japanese]

Article type: Appendix
2002 Volume 71 Pages App2-
Published: March 29, 2002
Released on J-STAGE: October 03, 2017

DOIhttps://doi.org/10.14825/kaseki.71.0_App2

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[title in Japanese]

Article type: Appendix
2002 Volume 71 Pages App3-
Published: March 29, 2002
Released on J-STAGE: October 03, 2017

DOIhttps://doi.org/10.14825/kaseki.71.0_App3

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[title in Japanese]

Article type: Appendix
2002 Volume 71 Pages App4-
Published: March 29, 2002
Released on J-STAGE: October 03, 2017

DOIhttps://doi.org/10.14825/kaseki.71.0_App4

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[title in Japanese]

Article type: Index
2002 Volume 71 Pages Toc1-
Published: March 29, 2002
Released on J-STAGE: October 03, 2017

DOIhttps://doi.org/10.14825/kaseki.71.0_Toc1

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[title in Japanese]

Article type: Appendix
2002 Volume 71 Pages App5-
Published: March 29, 2002
Released on J-STAGE: October 03, 2017

DOIhttps://doi.org/10.14825/kaseki.71.0_App5

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Peculiar mode of occurrence and its preservational history of Polyptychoceras, a Cretaceous heteromorph ammonite

Takashi Okamoto, Koji Asami

Article type: Article
2002 Volume 71 Pages 1-18
Published: March 29, 2002
Released on J-STAGE: October 03, 2017

DOIhttps://doi.org/10.14825/kaseki.71.0_1

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Polyptychoceras, an Upper Cretaceous diplomoceratid heteromorph ammonite, commonly preserved in the calcareous nodules with a oblique posture against the bedding plane. In order to interpret this peculiar mode of occurrence, detailed observation of fossiliferous nodules, hydrostatic calculations, and sedimentational experiments were carried out. As a conclusion, a presumable taphonomic history of Polyptychoceras spp. is reconstructed as follows : 1) Soon after the death of organism, shells of Polyptychoceras spp. were waterlogged and were laid down on the sea floor just like many shells of other ammonites, 2) when the floor is covered with fine and new sediment, which probably forms a softground and behaves as a viscous fluid, some shells having a highly polarized density like a peculiar growth stage of Polyptychoceras spp. had rotated in the sediments, because the buoyancy acting on a distant point from the center of gravity had considerably increased in such condition, 3) for a while, turning-part of phragmocone in some shells had possibly been jutting out from the sediments, and the part had eroded or sometimes lost away, 4) sooner or later, the shells had entirely buried by the succeeding sediments, and a calcareous nodule had been formed before the sediments around the shells were highly compressed throughout the diagenetic process. The post-burial movement of some ammonite shell, above mentioned, is named as "Zombie model", and this mechanism is possibly applicable to several other heteromorphic ammonite shells buried in the muddy sediments.

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Methods and research instruments for living radiolarian studies

Atsushi Matsuoka

Article type: Article
2002 Volume 71 Pages 19-27
Published: March 29, 2002
Released on J-STAGE: October 03, 2017

DOIhttps://doi.org/10.14825/kaseki.71.0_19

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[title in Japanese]

Article type: Appendix
2002 Volume 71 Pages 28-
Published: March 29, 2002
Released on J-STAGE: October 03, 2017

DOIhttps://doi.org/10.14825/kaseki.71.0_28

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Evolution of early hominids : recent fossil records and phylogenetic hypotheses

Masanaru Takai

Article type: Article
2002 Volume 71 Pages 29-43
Published: March 29, 2002
Released on J-STAGE: October 03, 2017

DOIhttps://doi.org/10.14825/kaseki.71.0_29

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14th International Symposium on Ostracoda

Noriyuki Ikeya, Akira Tsukagoshi

Article type: Article
2002 Volume 71 Pages 45-49
Published: March 29, 2002
Released on J-STAGE: October 03, 2017

DOIhttps://doi.org/10.14825/kaseki.71.0_45

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Report on the 3rd symposium of IGCP 434 "Carbon cycle and bio-diversity change during the Cretaceous"

Takashi Hasegawa

Article type: Article
2002 Volume 71 Pages 51-57
Published: March 29, 2002
Released on J-STAGE: October 03, 2017

DOIhttps://doi.org/10.14825/kaseki.71.0_51

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Y. Okamura : Footprints that turned into stone-An introduction to the footprint fossils from Japan and a record of their investigation

Chiyomi Yamakawa

Article type: Article
2002 Volume 71 Pages 58-
Published: March 29, 2002
Released on J-STAGE: October 03, 2017

DOIhttps://doi.org/10.14825/kaseki.71.0_58

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W. S. Browner (translated by H. Origasa) : Publishing and presenting clinical research

Yokichi Takayanagi

Article type: Article
2002 Volume 71 Pages 59-61
Published: March 29, 2002
Released on J-STAGE: October 03, 2017

DOIhttps://doi.org/10.14825/kaseki.71.0_59

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ISSC (translated by Geological Society of Japan) : International stratigraphic guide

Yokichi Takayanagi

Article type: Article
2002 Volume 71 Pages 62-64
Published: March 29, 2002
Released on J-STAGE: October 03, 2017

DOIhttps://doi.org/10.14825/kaseki.71.0_62

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T. Inoue ed. : Microscope observation for Rocks and Fossils

Ken'ichi Saiki, Naoki Takahashi

Article type: Article
2002 Volume 71 Pages 65-
Published: March 29, 2002
Released on J-STAGE: October 03, 2017

DOIhttps://doi.org/10.14825/kaseki.71.0_65

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Special feature : Recent development and topics of Cenozoic molluscan paleontology

Koichiro Masuda

Article type: Article
2002 Volume 71 Pages 66-67
Published: March 29, 2002
Released on J-STAGE: October 03, 2017

DOIhttps://doi.org/10.14825/kaseki.71.0_66

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C. Patterson (translated by S. Mawatari, M. Uehara and N. Isono) : Evolution 2nd Edition

Akira Tsukagoshi

Article type: Article
2002 Volume 71 Pages 68-
Published: March 29, 2002
Released on J-STAGE: October 03, 2017

DOIhttps://doi.org/10.14825/kaseki.71.0_68

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Obituary : Dr. Tatsuaki Kimura

Hisayoshi Igo, [in Japanese]

Article type: Article
2002 Volume 71 Pages 69-70
Published: March 29, 2002
Released on J-STAGE: October 03, 2017

DOIhttps://doi.org/10.14825/kaseki.71.0_69

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[title in Japanese]

Article type: Appendix
2002 Volume 71 Pages 71-74
Published: March 29, 2002
Released on J-STAGE: October 03, 2017

DOIhttps://doi.org/10.14825/kaseki.71.0_71

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[title in Japanese]

Article type: Appendix
2002 Volume 71 Pages 74-
Published: March 29, 2002
Released on J-STAGE: October 03, 2017

DOIhttps://doi.org/10.14825/kaseki.71.0_74

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[title in Japanese]

Article type: Appendix
2002 Volume 71 Pages 75-
Published: March 29, 2002
Released on J-STAGE: October 03, 2017

DOIhttps://doi.org/10.14825/kaseki.71.0_75

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[title in Japanese]

Article type: Appendix
2002 Volume 71 Pages 76-
Published: March 29, 2002
Released on J-STAGE: October 03, 2017

DOIhttps://doi.org/10.14825/kaseki.71.0_76

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[title in Japanese]

Article type: Appendix
2002 Volume 71 Pages App6-
Published: March 29, 2002
Released on J-STAGE: October 03, 2017

DOIhttps://doi.org/10.14825/kaseki.71.0_App6

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[title in Japanese]

Article type: Appendix
2002 Volume 71 Pages App7-
Published: March 29, 2002
Released on J-STAGE: October 03, 2017

DOIhttps://doi.org/10.14825/kaseki.71.0_App7

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[title in Japanese]

Article type: Appendix
2002 Volume 71 Pages App8-
Published: March 29, 2002
Released on J-STAGE: October 03, 2017

DOIhttps://doi.org/10.14825/kaseki.71.0_App8

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[title in Japanese]

Article type: Cover
2002 Volume 71 Pages Cover2-
Published: March 29, 2002
Released on J-STAGE: October 03, 2017

DOIhttps://doi.org/10.14825/kaseki.71.0_Cover2

JOURNAL FREE ACCESS

Download PDF (60K)
[title in Japanese]

Article type: Cover
2002 Volume 71 Pages Cover3-
Published: March 29, 2002
Released on J-STAGE: October 03, 2017

DOIhttps://doi.org/10.14825/kaseki.71.0_Cover3

JOURNAL FREE ACCESS

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