Environmental adaptive strategies for feeding under water in the Tethytheria (Mammalia: Afrotheria) based on isotopic and texture analyses of teeth.
| Project/Area Number |
15K05333
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Stratigraphy/Paleontology
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| Research Institution | National Museum of Nature and Science, Tokyo |
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Principal Investigator |
Kohno Naoki 独立行政法人国立科学博物館, 地学研究部, グループ長 (20250136)
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| Research Collaborator |
UNO Hikaru 早稲田大学, 理工学術院・総合研究所, 研究員
TARU Hajime 神奈川県立生命の星地球博物館, 学芸部, 主任学芸員
YAMADA Eisuke 山梨県立博物館, 学芸課, 学芸員
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2017: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2016: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2015: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
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| Keywords | テチス獣類 / テクスチャー / 索餌戦略 / 安定同位体 / 水生適応 |
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| Outline of Final Research Achievements |
Carbon and oxygen isotopic analyzes were conducted to the basal taxa of the Proboscidea (i.e., the elephants) from the Paleocene marine phosphatic formation (ca. 60 Ma) distributed in the Ground Daoui, the Ouled Abdoun Basin, Morocco, located on the northern Africa, to estimate their habitat and feeding preferences. As a result, basal taxa of the Paleocene elephants were suggested to be aquatic. In addition, they were considered to have been inhabited around the marine coast of the Tethys Sea (=ancient Mediterranean Sea). From these results, the elephants were aquatic in the initial stage of their evolution, and surprisingly, they were inhabited along the coast of the Tethys Sea during their initial evolution and adaptation in the Paleocene. Accordingly, the tethytheres as a whole evolved initially as marine mammals, and they were thought to be returned to lake or river secondarily and to land thirdly along the coast of and/or in North Africa.
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Report
(4 results)
Research Products
(10 results)
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[Journal Article] A new desmostylian mammal from Unalaska (USA), the robust Sanjussen jaw from Hokkaido (Japan), with comments on feeding in derived desmostylids.2015
Author(s)
Chiba, K., Fiorillo, A. R., Jacobs, L. L., Kimura, Y., Kohno, N., Kobayashi, Y., Nishida, Y., Polcyn, M. J. and Tanaka, K.
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Journal Title
Historical Biology
Volume: 27
Issue: 1-2
Pages: 289-303
DOI
Related Report
Peer Reviewed / Open Access
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[Presentation] Yamada, E., Kubo, M. O., Kubo, T. & Kohno, N., 2017. Three dimensional microwear analysis with ISO surface roughness parameters for exploring the domesticated pig in the past.2017
Author(s)
Yamada, E., Kubo, M. O., Kubo, T. & Kohno, N.
Organizer
77th Annual Meeting of the Society of Vertebrate Paleontology. (TELUS Convention Centre, Calgary, Canada).
Related Report
Int'l Joint Research
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[Presentation] Desmostylian remains from Unalaska (USA).2015
Author(s)
Kohno, N., Fiorillo, A. R., Jacobs, L. L., Chiba, K., Kimura, Y., Kobayashi, Y., Nishida, Y., Polcyn, M. J. and Tanaka, K.
Organizer
75th Annual Meeting of the Society of Vertebrate Paleontology
Place of Presentation
Dallas (Texas, USA)
Year and Date
2015-10-14
Related Report
Int'l Joint Research
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