特里亚斯纪晚期†Cryptovaranoides microlanius是一个形动物,而不是一个形动物
David I Whiteside1,2, Sofía A V Chambi-Trowell1, Michael J Benton1
1School of Earth Sciences, University of Bristol, Bristol BS8 1RJ, UK.
Royal Society open science
|November 28, 2024
概括
这项研究重申了Cryptovaranoides microlanius作为一个早期的状动物,纠正了最近的重新解释. 化石作为皇冠状动物的位置对于理解的进化至关重要.
科学领域:
- 古生物学的古生物学
- 脊椎动物的进化 脊椎动物的进化
- 子的原生学.
背景情况:
- 2022年将Cryptovaranoides microlanius描述为最古老的冠状 () 的描述显著扩大了它们已知的时间范围.
- 2023年的一次重新解释挑战了这一点,将Cryptovaranoides归类为类动物,影响了对早期类动物进化的理解.
研究的目的:
- 为了解决最近对Cryptovaranoides microlanius的重新解释中的错误.
- 用更正的形态学数据重新评估 †Cryptovaranoides 的家族遗传位置.
主要方法:
- 重新检查Cryptovaranoides microlanius的化石标本,包括原始岩石样本和计算机断层扫描 (CT) 扫描.
- 来自2023年重新解释的观察和解释错误的纠正.
- 重写形态数据和随后的基因分析.
主要成果:
- 在2023年的研究中发现了化石观测和形态解释中的许多错误.
- 遗传学分析始终将Cryptovaranoides定位为一个Lepidosauromorph,特别是一个泛和冠.
- 这种物种被证实不是一个古类动物.
结论:
- 支持 †Cryptovaranoides microlanius 作为冠状状动物的最初分类.
- 这一发现对于准确地重建状动物 (和亲属) 的早期进化历史至关重要.
- 对化石证据的正确解释在家族遗传学研究中至关重要.
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