保存的附属物在一个Silurianbinodicope:奥斯特拉科德甲类的进化历史的影响
David J Siveter1, Derek E G Briggs2, Derek J Siveter3,4
1School of Geography, Geology and the Environment, University of Leicester , Leicester LE1 7RH, UK.
Biology letters
|May 22, 2024
概括
特别保存的鸟化石揭示了对关节动物进化的新见解. 软部位形态学对于准确地分类古代鸟 (甲动物) 和了解它们的进化历史至关重要.
科学领域:
- 古生物学的古生物学
- 海洋生物学 海洋生物学
- 进化生物学 进化生物学
背景情况:
- 鱼是古代的甲动物,有大量的化石记录可以追溯到5亿年前.
- 它们居住在各种水生环境中,是最多种类的化石节足动物之一.
- 具有软组织的异常保存的鸟化石很少见,特别是来自古生物学时代的化石.
研究的目的:
- 为了描述一个新属和物种的异常保存的鱼, *Derima paparme*,从Silurian Lagerstätte.
- 调查鸟群Binodicopina的软部位形态,特别是附属物.
- 根据新的形态证据,重新评估鸟的分类和进化史.
主要方法:
- 考古学挖掘和分析保存良好的化石.
- 使用先进的成像技术,详细地对鸟和附属物进行形态学研究.
- 遗传学分析整合了和软部位形态学.
主要成果:
- 发现了 *Derima paparme* gen. et sp. 的发现. 来自约430万年前的赫雷福德郡西卢里亚石器仓库.
- 对于主要的古老时期鸟群Binodicopina的附属物首次描述.
- *D. paparme*的附属体形态表明binodicopes属于Podocopa,这挑战了以前仅基于贝形态的分类.
结论:
- 软部位形态对于准确地分类化石鸟至关重要,因为形态本身可能会误导.
- 基于软部分证据的Podocopa内部的binodicope的放置,需要重新评估鸟分类学.
- 鸟的进化历史可能需要进行重大修订,因为某些群体的基于贝的分类不可靠.
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