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Updated: Jun 25, 2026

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Dissection and Flat-mounting of the Threespine Stickleback Branchial Skeleton
Published on: May 7, 2016
一种带有辐射口的大附属节肢动物,来自德意志德纪下部的汉斯鲁克石板,德国
Gabriele Kühl1, Derek E G Briggs, Jes Rust
1Division of Palaeontology, Steinmann Institute, University of Bonn, Nussallee 8, 53115 Bonn, Germany.
概括
一个新的化石,Schinderhannes bartelsi,将已知的大附属物节足动物的范围延长了1亿年. 这一发现揭示了关键的异常糖特征在欧类动物辐射后长时间持续存在.
科学领域:
- 古生物学的古生物学
- 进化生物学 进化生物学
- 关节动物研究 关节动物研究
背景情况:
- 由一个专门的前肢定义的大尾节足动物,以前只从中坎布里亚时期就已知.
- 早期节肢动物的进化历史和多样性仍然是积极研究的领域.
研究的目的:
- 描述一种新的化石节肢动物,它扩展了已知的大附属节肢动物的分层和时间范围.
- 为了研究这个新分类在早期欧类动物中的遗传学位置.
- 为了理解在化石记录中异常caridid特征的持久性.
主要方法:
- 化石地点的地质约会和分层分析.
- 对化石标本的详细形态检查,Schinderhannes bartelsi. .
- 用克拉迪斯基方法进行基系学分析,以确定进化关系.
主要成果:
- 在德国低代纪汉斯瑞克石板中发现了Schinderhannes bartelsi,将大附属节肢动物的范围延长了约1亿年.
- 斯金德罗纳斯·巴尔特利斯 (Schinderhannes bartelsi) 呈现出异常和欧类特征的独特组合,包括一个专门的游泳附属物.
- 克拉迪斯蒂克分析将这种新分类物种置于皇冠群欧类动物的基底,表明大附属物关节动物是副类的.
结论:
- 发现Schinderhannes bartelsi显著推迟了已知的大型附属物节足动物的化石记录.
- 这种化石证明了原始特征的长期持久性,例如多片段的猛禽附属物和层的嘴巴,超出了初始的欧类动物辐射.
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