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2016 Fiscal Year Final Research Report

Comparative research on Ardipithecus ramidus and other fossil evidence: enhancing evolutionary morphological research

Research Project

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Project/Area Number 24000015
Research Category

Grant-in-Aid for Specially Promoted Research

Allocation TypeSingle-year Grants
Review Section Biological Sciences
Research InstitutionThe University of Tokyo

Principal Investigator

Suwa Gen  東京大学, 総合研究博物館, 教授 (50206596)

Asfaw Berhane  

Co-Investigator(Kenkyū-buntansha) Katoh Shigehiro  兵庫県立人と自然の博物館, 自然環境評価研究部, 主任研究員 (50301809)
Nakaya Hideo  鹿児島大学, 理学部, 教授 (20180424)
Nakatsukasa Masato  京都大学, 理学系研究科, 教授 (00227828)
Endo Hideki  東京大学, 総合研究博物館, 教授 (30249908)
Kono Reiko  独立行政法人国立科学博物館, 人類研究部, 研究主幹 (30356266)
Co-Investigator(Renkei-kenkyūsha) Hyodo Masayuki  神戸大学, 内海域環境教育研究センター, 教授 (60183919)
Ogihara Naomichi  慶應義塾大学, 理工学部, 教授 (70324605)
Research Collaborator Beyene Yonas  
Sasaki Tomohiko  
Sano Katsuhiro  
Shimizu Daisuke  
Koyabu Daisuke  
Project Period (FY) 2012 – 2016
Keywords形態 / 先史 / 生体機構 / 霊長類 / 進化
Outline of Final Research Achievements

The Chorora Formation research resulted in the discovery of new mammalian fossil assemblages spanning 9 to 7 Ma, including fossils of a large bodied ape, supporting an African origin of the human and African great ape clade. The Konso Formation research clarified the emergence, subsequent development, and paleoenvironmental contexts of the Acheulean technological complex from 1.75 Ma through 0.85 Ma. Comparative analysis of Ardipithecus ramidus and related fossils included a new estimate of canine sexual dimorphism and key morphofunctional evaluations of the hand and foot. Results confirmed a lack of knuckle-walking related features in the Ar. ramidus midcarpal and metacarpal articulations. Analyses of foot bones supported the hypothesis of Australopithecus terrestrial adaptation.

Free Research Field

生物学

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Published: 2018-03-22  

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