1990 Fiscal Year Final Research Report Summary
A Study on Footprints of Pliocene-Pleistocene Land Mammals.
| Project/Area Number |
01480033
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| Research Category |
Grant-in-Aid for General Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Stratigraphy/Paleontology
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| Research Institution | SHISHU UNIVERSITY |
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Principal Investigator |
KAMEI Tadao Shinshu University, Professor Faculty of Science., 理学部, 教授 (60025228)
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| Co-Investigator(Kenkyū-buntansha) |
KAMIYA Hidetoahi Kyoto University, Faculty of Sci., Assoc. Res., 理学部, 助手 (00115825)
KOSAKA Tomoyoshi Shinshu Univ. Assist. Prof. Faculty of Sci., 理学部, 助教授 (20020670)
KUMON Fujio Shinshu Univ., Assist. Prof. Faculty of sci., 理学部, 助教授 (60161717)
SAKAI Junich Shinshu Univ., Assist. Prof. Faculty of Sci., 理学部, 助教授 (30020663)
AKIHAMA Masahiko Shinshu University, Professor Faculty of Science, 理学部, 教授 (20015580)
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| Project Period (FY) |
1989 – 1990
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| Keywords | Pliocene / Mammals / Footprint |
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| Research Abstract |
Investigations of stratigraphy, geochronology and paleoenvironment have been carried out respectively for mammalian footprint localities such as the sites of River Yasu of Shiga, Hanamaki of Iwate, Koshiji-machi of Niigata and sea coast of Akashi City, Hyogo. In addition, pattern analysis has been a ttempted in the study to those fose fossil footprints. In the course of study, distinct fossil footprints have been newly found in Ishikawa river bed at Tondabayashi City of Osaka, lake bottom of Lake Nojiri of Nagano and other localities in Japan and Indonesia.
(1) The stratigraphic horizons of those footprint sites are mostly concen-trated in the Lower Pleistocene beds, except for a case of Lake Nojiri. Even outside Japan, the presence of Pliocene-Pleistocene footprint are attractive worldwide likewise Laetoli of East Africa and West Texas sites of U. S. A.
(2) Sedimentologically all of those footprints are characteristic of embedding in thin alternation silt-sand with intercalations of coarse sand which were deposited under dry-wet condition. Therefore, the formation of footprint could be connected with a circumstance of peculiar age and space.
(3) It becomes to be possible partly to identify host animals specifically from the pattern recognition of fossil footprints. For example, foot-print patterns of Nauman's Elephant Paleoloxodon naumanni of Late Pleisto-cene is able to be discriminated from that of Early Pleistocene elephant Stegod on
aurorae.
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