晚期奥尔多维纪欧类动物在岩中保存了最古老的欧类肌肉结构
Russell D C Bicknell1,2, Robert R Gaines3, Melanie J Hopkins1
1Division of Paleontology (Invertebrates), American Museum of Natural History, New York, NY 10024, USA.
Biology letters
|July 10, 2024
概括
来自纽约的化石海 (eurypterids) 揭示了保存的软组织肌肉结构,提供了最古老的化肌肉证据. 在其他身体部位化石化之前,Pyrite的保存迅速捕获了这些肌肉.
科学领域:
- 古生物学的古生物学
- 海洋生物学 海洋生物学
- 地质地质地质地质地质地
背景情况:
- 化石中软组织的化非常罕见.
- 位于纽约州 (奥尔多维纪晚期) 的洛林集团黑页岩以其特殊的化石保存而闻名,特别是比切尔的三岩床.
- 以前的发现主要集中在三虫和鸟软组织上.
研究的目的:
- 报告第一个保存的欧类 (海) 软组织肌肉结构的实例.
- 为了记录最古老的化石证据,欧基肌肉.
- 扩大对关节动物软组织的分音学过程的理解.
主要方法:
- 来自洛林集团的化欧类标本的分析.
- 详细检查软组织解剖学,包括中体肌肉.
- 硫同位素分析以确定相对于组织衰变和外骨化石化而言的化时间.
主要成果:
- 介质体肌肉结构的第一个例子保留在欧类 (海) 中,来自这个沉积物.
- 证明了欧类动物的肌肉可以被保存为pyrite.
- 硫同位素数据表明,在早期埋葬过程中,肌肉组织的快速 pyrite 复制,先于外骨 pyritization.
结论:
- 这一发现提供了最古老的欧基肌肉化石记录.
- 它扩展了已知的语音学路径,以保存详细的关节动物内部结构.
- 这些发现突出了矿在特定的早期基因条件下保护软组织的潜力.
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