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来自巴塔哥尼亚的一种新的白纪晚期状动物揭示了冈多瓦纳的多样性

Federico L Agnolín^1,2,3, Mauro Aranciaga-Rolando^4,5, Gerardo Álvarez-Herrera^1,3,6

¹Laboratorio de Anatomía Comparada y Evolución de los Vertebrados, CONICET-Museo Argentino de Ciencias Naturales "Bernardino Rivadavia", Av. Ángel Gallardo 470 (C1405DJR), Ciudad Autónoma de Buenos Aires, Argentina.

Scientific reports

|March 1, 2026

概括

一个新的化石,Paleoteius lakui,来自巴塔哥尼亚.

科学领域:

古生物学的古生物学
脊椎动物动物学脊椎动物动物学
进化生物学进化生物学

背景情况:

中世陆地类动物的化石记录在南半球稀少.
南半球的物种占在劳拉西亚发现的物种的不到6%.
这项研究解决了南美状动物的不良化石记录.

研究的目的:

描述来自南美洲的最完整的晚白纪陆地状类化石.
引入了一个新的属和物种,Paleoteius lakui.
澄清了Paleoteius lakui的遗传位置.

主要方法:

来自阿根廷巴塔哥尼亚的马斯特里希特艾伦形成的化石标本的描述.
形态遗传学分析. 生态遗传学分析.
植物遗传学分析包括一个分子骨干.

主要成果:

新的属和物种Paleoteius lakui是基于部分骨架进行描述的.
形态学分析将Paleoteius lakui放在Scincomorpha中,与Xantusiidae相关.
具有分子骨干位置的族系学分析Paleoteius lakui在Scincomorpha外,在一个早期分离的类.

结论:

帕莱奥泰乌斯·拉库伊 (Paleoteius lakui) 代表了南美洲以前未被认可的状动物血统.
这些发现表明,在罗纪-最早的白纪期间,Paleoteius lakui的祖先可能是国际化的.
这一发现显著增强了对中生代贡德瓦纳状动物多样性的理解.

关键词:

艾伦的阵容艾伦的阵容人体解剖学解剖学解剖学马斯特里赫特条约是什么意思人类的家谱 (Phylogeny) 是一个学科.斯克瓦马塔 (Squamata) 是一个小队.

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