早期的波斯河两足爬行动物爬行动物
D S Berman1, R R Reisz, D Scott
1Section of Vertebrate Paleontology, Carnegie Museum of Natural History, 4400 Forbes Avenue, Pittsburgh, PA 15213, USA.
Science (New York, N.Y.)
|November 4, 2000
概括
来自德国的2亿9千万年前的爬行动物的化石,Eudibamus cursoris,显示了早期的双脚运动. 这一发现揭示了已知的最古老的Parareptilia和博洛索里德分布在Laurasia.
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
- 进化生物学 进化生物学
背景情况:
- 爬行动物的早期进化及其运动对于理解胎儿多样化至关重要.
- 博洛鱼群 (Bolosauridae) 是一种早期爬行动物群,其分布和生态作用尚不清楚.
研究的目的:
- 描述一个新的化石爬行动物,Eudibamus cursoris,来自德国下珀米亚.
- 为了研究E. cursoris.的运动能力和家族遗传位置.
- 提供关于Parareptilia和Bolosauridae早期演变和分布的见解.
主要方法:
- 完善保存的爬行动物骨的详细形态分析.
- 与其他早期爬行动物进行比较的解剖学研究.
- 遗传学分析以确定E. cursoris在Amniota.中的位置.
主要成果:
- 这块2亿9千万年前的骨代表了Eudibamus cursoris,gen. et sp. 的遗体. 一个小的博洛索里德.
- E. cursoris表现出适应 cursorial 双脚运动的适应性,包括一个偏的数字格拉德姿势.
- 这一发现证实了波洛类动物在洛拉西亚在早期珀米亚时期的存在.
- E. cursoris被确定为已知最古老的Parareptilia.成员.
结论:
- Eudibamus cursoris提供了爬行动物的最早的证据,证明了爬行动物的双脚运动.
- 这一发现扩大了波斯河早期博洛osauridae 的已知地理范围.
- E. cursoris代表了已知的最早的Parareptilia,揭示了这一主要爬行动物分类的多样化.
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