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Proboscidean footprint fossils from the Lower Pleistocene Okui Formation on the river bed of Chikuma River, Saku Basin, Nagano Prefecture, Central Japan.
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- Nagamori Hideaki
- Institute of Geology and Geoinformation, GSJ, AIST
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- Yoshikawa Hiroaki
- Toyohashi Museum of Natural History
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- Hatakeyama Koji
- Chausuyama Museum of Natural History
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- Terao Masumi
- Nozawakita High School
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- Tanabe Tomotaka
- Institute of Geology and Geoinformation, GSJ, AIST Togakushi Fossil Museum
Bibliographic Information
- Other Title
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- 長野県佐久盆地千曲川河床の下部更新統大杭層産長鼻類足跡化石
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Description
Many proboscidean footprint fossils were found from the Lower Pleistocene Okui Formation in the Komoro Group at the Chikuma River in Tomi City, Nagano Prefecture. The stratigraphic horizon containing the trace fossils are situated about 2 meters above the Hakeyama Pumice Tuff (ca. 1.3 Ma). The trackmaker was most likely Stegodon aurorae (Matsumoto), based on the morphological characteristics of the footprints and proboscidean biostratigraphy of Japan. The palaeoenvironment of the horizon containing the footprints is considered to be formed at flood plain based on sedimentary facies and associated plant and molluskan fossils.
Journal
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- BULLETIN OF THE GEOLOGICAL SURVEY OF JAPAN
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BULLETIN OF THE GEOLOGICAL SURVEY OF JAPAN 56 (3-4), 127-135, 2005
National Institute of Advanced Industrial Science and Technology, Geological Survey of Japan
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Keywords
Details 詳細情報について
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- CRID
- 1390001205195391616
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- NII Article ID
- 130004714652
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- ISSN
- 2186490X
- 13464272
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- Text Lang
- ja
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed