コメント "超構造は,ユナノゾウの祖先の脊椎動物の喉骨格を明らかにする"
Xi-Guang Zhang1, Brian R Pratt2
1Institute of Paleontology, Yunnan University (Chenggong Campus), Kunming 650500, China.
Science (New York, N.Y.)
|July 27, 2023
まとめ
カンブリア化石の顕微鏡分析は,脊椎動物の進化論的な主張に異議を唱え,汚染の可能性を示唆している. ユナノゾア動物で観察された微細構造の起源を検証するには,さらなる研究が必要です.
科学分野:
- 古生物学
- 進化生物学
- 生物化学
背景:
- カンブリア時代の動物と脊椎動物との進化的関連は重要な研究分野である.
- ティアンと仲間たち 微細構造分析に基づいて,ユナノゾウは幹の脊椎動物であると提案した.
研究 の 目的:
- カンブリア紀のユナノゾアの枝状弧における微細繊維組織の解釈を再評価する.
- 化石組織に 現代の有機汚染の可能性を調査する
主な方法:
- ナノスケール画像技術
- 有機残留物の化学分析
- 現代の生物学的組織と潜在的な汚染物質との比較分析
主要な成果:
- ユナノゾアの枝状のアーチで観察された"微細繊維"は,元の生物学的物質ではないかもしれません.
- これらの構造は現代の有機汚染と 一致していることを示唆しています
結論:
- この微細構造的証拠に基づいたユナノゾウが幹の脊椎動物であるという主張は,再検討を必要としています.
- 汚染の存在は,初期の動物の組織学と進化の以前の解釈に挑戦しています.
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