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Updated: Aug 11, 2026
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サハラ砂漠の捕食恐竜と後期白期の動物差別化
1P. C. Sereno, H. C. E. Larsson, P. M. Magwene, C. A. Sidor, J. A. Wilson, Department of Organismal Biology and Anatomy, University of Chicago, 1027 East 57th Street, Chicago, IL 60637, USA. D. B. Dutheil, 48 rue de la Rochefoucauld, 75009 Paris, France. M. Iarochene, Ministere de l'Energie et des Mines, Rabat, Morocco. G. H. Lyon, 3551 Carter Hill Road, Montgomery, AL 36111, USA. D. J. Varricchio, Old Trail Museum, Post Office Box 919, Choteau, MT 59422, USA.
Science (New York, N.Y.)
|May 17, 1996
まとめ
クレタ紀後期期のアフリカの化石は,カルチャロドントサウルスや基礎コエルロサウルスを含む新しい捕食性恐竜を明らかにしています. この発見は,カルカロドントサウルスの恐竜の地球規模の放射と,初期のクレタセア紀後半のファウナ差別化を強調しています.
科学分野:
- パレオントロジー・パレオントロジー
- 脊椎動物の古生物学について
- メソゾーイク時代 パレオントロジー
背景:
- モロッコのケム・ケム地方のケム・ケム時代の化石は,アフリカの恐竜の進化についての洞察を提供します.
- この時期のアフリカの地理的隔離は,そのユニークな動物にも影響を及ぼした.
研究 の 目的:
- ケム・ケム地域からの新しい大型捕食恐竜の化石を記述する.
- カーチャロドントサウリドの捕食者の地球規模の分布と放射線を調査する.
- 大陸の漂流に反応した恐竜の動物差異を理解する.
主な方法:
- 化石発掘と骨格残骸の分析.
- 既知の属を持つ恐竜化石の比較解剖学.
- 大陸の漂流効果を理解するための古地理学的再構築.
主要な成果:
- 進化したアロサウロイドであるカーチャロドントサウルスの発見は, 1.6 メートルの頭蓋骨によって表現されています.
- バハリアサウルスのような,細い比率を持つ新しい基礎コエルロサウルスの識別.
- カーカロドントサウリドの捕食者のこれまで未知の世界的な放射線の証拠.
- 恐竜のファウナの急激な地理的差異化,白亜紀末期の始まり.
結論:
- ケム・ケム化石は,アフリカにおける重要な新しい捕食恐竜を表しています.
- クレタ紀のセロポッド動物は,広範囲にわたる地球放射線と地理的差異を示しています.
- 大陸の漂流は,白亜紀後期に恐竜の生態系を形成する上で重要な役割を果たしました.
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