ミャンマーの白亜紀のホリミングバードサイズの恐竜
Lida Xing1,2, Jingmai K O'Connor3,4, Lars Schmitz5,6
1State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Beijing, China.
Nature
|March 13, 2020
まとめ
新種の恐竜 オキュルデンタビス・カウングラエが 9900万年前の珀で発見されました 脊椎動物の小型化や 古代の生態系について 洞察力を与えてくれます
科学分野:
- 古生物学
- 脊椎動物の解剖学
- アンバー 化石 研究
背景:
- 珀の化石は めったに見られない小さな動物たちの 繊細な構造を保存しています
- ミャンマーの珀のエナティオルニチン鳥の化石は 石器の化石よりも小さかった.
研究 の 目的:
- ビルマの珀でできた 鳥のような小さな頭蓋骨を 描写したものです
- この新しい種の 独特の解剖学的特徴と意味を分析する
主な方法:
- アンバーで見つかった化石の骨格分析
- 現存する脊椎動物と絶滅した脊椎動物との比較解剖学.
- ミニチュライゼーションと古生態学の文脈における解剖学的特徴の解釈
主要な成果:
- Oculudentavis khaungraae gen. et sp. の記述について 最小のメソゾイク恐竜だった
- O. khaungraaeは,日中の活動を示唆するユニークな頭蓋骨の融合とカエルのような眼形状を示しています.
- この小さな大きさは アンバーの形成に関する 島の生物地理学の理論と一致しています
結論:
- オキュルデンタビスは以前は知られていなかった 建築計画と生態学的ニッチを表しています
- この発見はメソゾイクにおける 脊椎動物の体の大きさの 既知の限界を押し上げています
- 珀の堆積は 脊椎動物の進化を理解するのに 極めて重要です
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