パキスタンのオリゴセンのレムールの化石
L Marivaux1, J L Welcomme, P O Antoine
1Laboratoire de Paléontologie, Institut des Sciences de l'Evolution, UMR 5554 CNRS, cc064, Université Montpellier II, place E. Bataillon, F-34095 Montpellier Cedex 5, France. marivaux@isem.univ-montp2.fr
Science (New York, N.Y.)
|October 20, 2001
まとめ
パキスタンで発見された新しいレムルの化石,Bugtilemur mathesoniは,レムリformesの最も古い記録です. この発見は,3000万年以上前にマダガスカルの外でレムルが多様化したことを示しており,インド亜大陸の役割を強調しています.
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
- 霊長類の進化について
背景:
- マダガスカル・レムールの起源と初期の進化は,化石記録が不完全であるため,ほとんど理解されていません.
- レムールの古生物学地理に関する既存の仮説には,決定的な化石の証拠がない.
研究 の 目的:
- レムールの初期の多様化と古生物学地理学的起源を調査する.
- マダガスカル・レムルの進化史を明らかにする新しい化石の証拠を提供すること.
主な方法:
- 新しい化石の霊長類種,Bugtilemur mathesoni gen. et sp.の発見と記述について ノブ. ノブ. ノブ. ノブ. ノブ. ノブ. ノブ.
- パキスタンのブギーヒルズにあるオリゴセンの初期の堆積物のストラティグラフィック分析.
主要な成果:
- バグティレムール・マテソニ (Bugtilemur mathesoni) の特定は,チェイロガライド類に明らかな類似性を有するストライプシリン類の化石である.
- この化石は,オリゴセンの初期 (3000万年以上前) に遡るレムリformesの最も古い存在を表しています.
- パキスタンの発見地は,レムールの初期の多様化がマダガスカル以外で起きたことを示しています.
結論:
- レムリフォームドは,マダガスカル以外で多様化した可能性があり,インド亜大陸は彼らの初期の進化に重要な役割を果たしました.
- この発見は,ストレプシリン類霊長類の進化の古生物学地理学的モデルを改訂する必要がある.
- Bugtilemur mathesoniは,レムルの進化の歴史を深く理解するための重要な洞察を提供します.
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