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Computer-Generated Animal Model Stimuli
Published on: July 29, 2007
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スペインの低白期に生息していた奇妙な,うっすらとしたカーチャロドントサウリア (テロポダ) です
Francisco Ortega1, Fernando Escaso, José L Sanz
1Grupo de Biología, Departamento de Física Matemática y de Fluidos, Facultad de Ciencias, Universidad Nacional de Educación a Distancia, Paseo Senda del Rey 9, 28040 Madrid, Spain. fortega@ccia.uned.es
Nature
|September 11, 2010
まとめ
新しい恐竜であるConcavenator corcovatusは,原始的なカーカロドントサウルスの特徴と潜在的な羽の構造を明らかにしています. この発見は,セロポッド恐竜の初期の羽根の起源に関する私たちの理解を広げています.
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
- 脊椎動物学 脊椎動物学
背景:
- カルチャロドントサウルスは,最大の捕食恐竜で,以前はクレタケイア期後半のゴンドワナの陸地に限定されていると考えられていた.
- 最近のローラシアの証拠は,カーカロドントサウルスの多様化と進化史の再評価を必要とします.
- カーチャロドントサウルスの初期の進化史は,これまで理解されていたよりも複雑である.
研究 の 目的:
- スペインの下白亜紀の新種の恐竜類であるコンカヴェネーター・コルコバタス (Concavenator corcovatus) を記述する.
- カーチャロドントサウリア群内のコンカヴェネーター・コルコバタスの系統的位置を分析する.
- Concavenator corcovatusの異常な解剖学的特徴,特に羽根の起源との潜在的なリンクを調査するために.
主な方法:
- コンカヴェネーター・コルコバトゥス (Concavenator corcovatus) のほぼ完全な骨格の記述.
- 系統遺伝的関係を決定するためのクラディスティック分析.
- 現代の鳥類とのアルナ構造の比較解剖学.
主要な成果:
- Concavenator corcovatusは,原始的なカーカロドントサウリアンと特定されています.
- この新分類種は,伸びた脊椎のプロセスによって形成された独特の状の構造を示しています.
- Concavenator corcovatusの肘の小さな凸は,鳥のクイールノブに同類するものとして提案されており,全身の葉っぱ構造を示しています.
結論:
- Concavenator corcovatusは,初期のカーカロドントサウルスの進化と多様化に関する重要な洞察を提供します.
- コンカベナターの頭に潜在的に羽毛に関連する構造物が存在することは,セロポッド恐竜の羽毛に同質な非スケールの皮膚付属体のための系統学的ブランケットを拡張します.
- この発見は,セロポッド恐竜の羽根の起源と進化を理解するための範囲を広げています.
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