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孤立的牙揭示了英国Wealden超级群 (下白) 中隐藏的旋类恐龙多样性
Chris T Barker1,2, Darren Naish3, Neil J Gostling1,3
1Institute for Life Sciences, University of Southampton, Southampton, United Kingdom.
PeerJ
|June 5, 2023
概括
来自英国的孤立的螺旋osaurid 牙.
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
- 中生代爬行动物 中生代爬行动物
背景情况:
- 孤立的螺旋osaurid 牙在英格兰南部的低白纪Wealden超群中很常见.
- 以前,这些牙通常归因于Baryonyx walkeri.
- 最近的研究表明,在白纪早期的英国,螺旋类的多样性更大.
研究的目的:
- 为了确定来自非韦尔德土形成单元的孤立的螺旋osaurid 牙 (HASMG G369a) 是否属于 Baryonyx.
- 测试有关英国脊类动物的分类学多样性的假设.
主要方法:
- 人类遗传学分析
- 差异化分析是一种差异化分析.
- 集群分析就是对集群进行分析.
- 牙形态学的定性和定量比较.
主要成果:
- 在HASMG G369a中,显而易见的是它与螺旋类有着明显的亲缘关系.
- 牙HASMG G369a在任何分析中都没有与Baryonyx相关联.
- 这一发现支持了在白纪早期英国存在多个螺旋osaurid 血统的观点.
结论:
- 孤立的螺旋osaurid 牙 HASMG G369a 不是可以引用 Baryonyx.
- 早期白时期的英国可能拥有多样化的脊类动物群,类似于伊比利亚的生态系统.
- 这项研究有助于了解早期的螺旋osaurid分布和多样性.
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