Ardipithecus ramidusの生息地に関するタフォノミクス,鳥類,および小脊椎動物の指標
Antoine Louchart1, Henry Wesselman, Robert J Blumenschine
1Iziko South African Museum, Natural History Department, Cenozoic Palaeontology Collections, Box 61, Cape Town 8000, South Africa.
Science (New York, N.Y.)
|October 8, 2009
まとめ
哺乳類や鳥類の遺骸を含む化石の証拠は,Ardipithecus ramidusが森林が茂ったプレオセンの環境で生きたことを示唆しています. 肉食動物活動とフクロウのペレットの分析により,生態系に関する洞察が得られた.
科学分野:
- パレオントロジー・パレオントロジー
- パレオエコロジー (古生態学)
- 脊椎動物の古生物学について
背景:
- 化石遺跡のストラティグラフィック分析は,古代ホミニンの環境を理解するために不可欠です.
- 生態学的再建は,動物集団とタフォノミクスの証拠に依拠している.
研究 の 目的:
- アルディピテクス・ラミドゥスのプレオセンの生息地を再構築する.
- 脊椎動物の化石集積を分析し,古環境に関する洞察を得るために.
主な方法:
- Ardipithecus ramidus stratigraphic intervalから脊椎動物の標本を体系的に収集した.
- 哺乳類および鳥類の化石の残骸の分析,識別および生態学的関連を含む.
- 大型の哺乳類の死体と小型の哺乳類の遺骸 (例えば,フクロウのペレット) のタフォノミクス分析.
主要な成果:
- 大型と小型の哺乳類,少なくとも29種の鳥類を含む数千の脊椎動物の標本が回収されました.
- 大型の哺乳類の死体と小型の哺乳類の残骸を食肉動物が破壊することは,特定の生態学的相互作用を示しています.
- 鳥類や歯類の豊富な種は,大きな水域から遠く離れた森の環境を示唆しています.
結論:
- 野生動物,地質学,同位体データの組み合わせは,Ardipithecus ramidus. ramidus. の森林化したプレオセンの生息地を強く支持しています.
- 古代生態学的再建は,初期のヒト類の進化と適応を理解するための重要な文脈を提供します.
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