バサルの鳥のヒンドウィングと足の羽の進化

Xiaoting Zheng¹, Zhonghe Zhou, Xiaoli Wang

¹Institute of Geology and Paleontology, Linyi University, Linyi City, Shandong, China. ty4291666@163.com

Science (New York, N.Y.)

|March 16, 2013

まとめ

初期の鳥類の化石には大きな足の羽がみられ,飛行の起源には足の羽の発達が含まれていたことを示唆しています. これは,初期の鳥の進化におけるスケールの足に関する以前の考え方に異議を唱えている.

科学分野:

パレオントロジー・パレオントロジー
進化生物学の進化生物学について
鳥類の進化について

背景:

最近のセロポッドの発見は,鳥類の進化における足の羽の重要性を強調しています.
鳥の足の全身の特徴を理解することは,飛行の起源について決定的に重要です.

研究の目的:

基礎鳥類の足の整体構造の特徴を調査する.
初期の鳥の羽との進化に関する新しい洞察を提供するため.

主な方法:

11羽の鳥類の基礎標本を分析した.
の特徴の比較研究. の特徴の比較研究.

主要な成果:

様々な基底鳥の足の羽が大きくなった証拠がある.
初期のオーニチュロモルフにおけるスケール足の二次進化を示唆している.
足の羽毛のディスタルからプロキシマルへの縮小パターンを示しています.

結論:

足の羽は,初期の鳥類の進化において重要な役割を果たしました.
羽根の分布パターンは,飛行の起源のヒントを提供します.
尺のついた足は,後にオルニチュロモルフの系統で進化した可能性が高い.

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