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南米の巨大霊長類であるProtopithecusの完全な骨格です
1Department of Anthropology, George Washington University, Washington DC, 20052, USA.
Nature
|May 23, 1996
まとめ
ブラジルで発見された巨大な化石のサル,Protopithecus brasiliensisは,ウーラーとスパイダー・モンクの特徴を組み合わせたユニークな特徴を明らかにしています. この発見は,南米における霊長類の進化に関する我々の理解を再構築する.
科学分野:
- パレオントロジー・パレオントロジー
- 霊長類の進化について
- ネオトロピカル・バイオロジー
背景:
- 新世界猿の化石発見は稀で,特に完全な骨格は稀である.
- 南米におけるプレイストセンの霊長類の多様性に関する以前の理解は限られていた.
研究 の 目的:
- 大型新世界猿の驚くほど完全な化石骨格を記述し,分析する.
- Protopithecus brasiliensis.の分類分類と進化的重要性を再評価する.
主な方法:
- ブラジルのバヒア州にあるプレイストセンの洞窟埋蔵から発見された霊長類の化石骨格の発掘と詳細な形態学的分析.
- 比較解剖学は,生きている霊長類の種との関係で頭蓋骨と頭蓋骨後の特徴を調査する.
主要な成果:
- 約25キログラムのProtopithecus brasiliensisの完全な骨格が回収されました.
- この化石は,独特のモザイクの特徴を呈している:ウワウワサルのように発声に適応した頭蓋骨と,クモサルのようなサスペンサー運動のための頭蓋骨後の特徴.
- これはプレイストセーンから知られている南米最大の猿を表しています.
結論:
- ネオトロピカル霊長類の適応的多様性は,これまで考えられていたよりも,近年の過去において著しく大きかった.
- ネオトロピクスにおける霊長類の適応の進化に関する現在の理論は,この発見に基づいて改訂を必要とする.
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