南アフリカのデボニアン期に生息するランプレイ
Robert W Gess1, Michael I Coates, Bruce S Rubidge
1Bernard Price Institute (Palaeontology), School for Geosciences, University of Witwatersrand, Johannesburg 2050, South Africa. robg@imaginet.co.za
Nature
|October 27, 2006
まとめ
デボニア期末期の新しい化石のランプレイ (Priscomyzon riniensis) は,現代のランプレイに近いのない脊椎動物が,これまで考えられていたよりも早く進化した証拠を提供している. この発見は,ランプレイの古代の系統と驚くべき持続性を強調しています.
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
- 脊椎動物の古生物学について
背景:
- ランプレイの進化史は,化石記録が稀で,パレオゾーイクとメソゾーイク期のいくつかの例しか知られていないため,ほとんど理解されていません.
- 現存する化石は,解剖学的に近代的なランプレイが白亜紀後期に存在していたことを示しているが,初期のデボニアン時代の祖先は難解のままである.
- のない脊椎動物 (アグナサン) は古代の系統を表しており,その多様性を理解することは脊椎動物の進化の鍵です.
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