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一种来自萨莫拉 (西班牙杜埃罗盆地) 中世新生代的新型鱼群 (Crocodyloidea)
Iván Narváez1, Ane de Celis1, Fernando Escaso1
1Grupo de Biología Evolutiva, Departamento de Física Matemática y de Fluidos, Facultad de Ciencias, UNED, Madrid, Spain.
Anatomical record (Hoboken, N.J. : 2007)
|March 6, 2024
概括
来自西班牙的欧纪杜埃罗盆地的鱼化石揭示了一种新物种,亚洲鱼 (Asiatosuchus oenotriensis) sp. 在新的一年里. 这种基底鱼类为了解欧洲古世eusuchian多样性增加了关键数据.
科学领域:
- 古生物学的古生物学
- 脊椎动物古生物学 脊椎动物古生物学
- 系统学 系统学 系统学
背景情况:
- 来自杜埃罗盆地的伊欧纪eusuchian鱼类包括Planocraniidae,Alligatoroidea和Crocodyloidea.
- 在全球范围内,Asiatosuchus属一直是古世鱼类遗骸的有问题的垃圾桶分类.
- 欧洲和北美古世鱼化石通常是碎片的,复杂的分类.
研究的目的:
- 重新检查并从遗传学上分析以前描述的杜埃罗盆地Eocene鱼形物质.
- 为了澄清西班牙鱼类标本的系统位置,传统上被归类为Asiatosuchus.
- 为了正式描述一个来自杜埃罗盆地的基底鱼类新物种.
主要方法:
- 对骨和下骨化石标本进行了详细的形态分析.
- 将这些标本纳入鱼类动物的综合遗传学分析中.
- 古世鱼类的比较骨科学和分类学修订.
主要成果:
- 这项研究证实了杜埃罗盆地有三个eusuchian鱼形系的存在:Planocraniidae,Alligatoroidea和Crocodyloidea.
- 一个几乎完整的头骨和下从中叶公元的Casaseca de Campeán被详细分析.
- 遗传学分析确定这些西班牙标本是基底类动物 Asiatosuchus oenotriensis sp. 的新物种. 在新的一年里.
结论:
- 这种新物种是Asiatosuchus oenotriensis sp. 代表了Crocodyloidea的基底成员.
- 这一发现增强了我们对伊比利亚半岛的鱼种群多样性和进化在伊世纪的理解.
- 亚洲类 (Asiatosuchus) 的修订强调了重新评估古世鱼类化石的必要性.
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