上プロテロゾイク期のシェールにおける化石の例外的な保存
N J Butterfield1, A H Knoll, K Swett
1Botanical Museum, Harvard University, Cambridge, Massachusetts 02138, USA.
Nature
|August 4, 1988
まとめ
この研究は,海洋シェールから特異的に保存された遅期プロテロゾイク期の化石を報告し,多細胞藻類や複雑な原生類を含む多様な生命形態を明らかにしています. この発見は,以前に入手可能なプロテロゾイク時代の化石記録よりも,初期の生命のより明確な見方を提供しています.
科学分野:
- パレオントロジー・パレオントロジー
- 地質学 地質学 地質学
- 生物学 生物学 生物学とは
背景:
- プロテロゾイク後期生物の化石記録は,一般的に分類学的に,環境的に限られている.
- 特殊な保存は,通常,制限された環境からの化炭酸で起こります.
研究 の 目的:
- 特別に保存状態が良好で多様な末期プロテロゾイク期の化石の集合を報告する.
- プロテロゾイク時代の生命について,より明確で分類学的に多様な見解を提供するため.
主な方法:
- 潮下海洋シェイルの例外的に保存された化石の分析.
- アクリタークス,シアノバクテリア,藻類,原生体,バクテリアを含む様々な生命体の識別.
主要な成果:
- 潮下海洋シェールから特徴的な化石集合体の発見.
- 多細胞藻類,複雑なプロティスタンスベジクル,およびヘテロトロフ菌の識別は,通常の微生物化石と共に行われます.
- このアセンブリージは,Proterozoic後期の生命について,異常に明確で分類学的に多様な視点を提供します.
結論:
- 特別に保存された後期プロテロゾイク時代の生命は,制限された炭酸塩を超えた環境で存在しています.
- 潮下下海洋のシェールから,豊富な化石の集合が生み出され,プロテロゾイク時代の生態系についての理解が広がります.
- この発見は,プロテロゾーイク期末期の生物の既知の多様性と複雑さを高めています.
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