重建一个神秘的宾夕法尼亚圆揭示了与Sphenophyllales的关系
Michael P D'Antonio1, Carol L Hotton2, Selena Y Smith3
1Earth Sciences, Negaunee Integrative Research Center, Field Museum of Natural History, Chicago, 60605, Illinois, USA.
American journal of botany
|April 25, 2024
概括
描述了一种新的化石,Hexaphyllostrobus kostorhysii,来自宾夕法尼亚州的Mazon Creek Lagerstätte,揭示了Sphenophyllales的特征. 这一发现澄清了ophyll的多样性,并重新评估了Tetraphyllostrobus的分类.
科学领域:
- 古植物学是古植物学.
- 植物系统学 植物系统学
- 化石记录分析 化石记录分析
背景情况:
- 宾夕法尼亚州的梅森溪仓库保存了非凡的植物化石,为古代生态系统提供了洞察力.
- 以前对某些化石的分类,如Tetraphyllostrobus,由于形态数据有限,一直是暂时的.
研究的目的:
- 描述3D形态,并确定从梅森溪 (Mazon Creek) 找到一个保存良好的化石的系统亲和力.
- 重新评估神秘的Tetraphyllostrobus属的分类学位置.
主要方法:
- 化石的详细3D形态分析.
- 与已知的古老生代形类的比较分析.
- 先进的成像技术包括扫描电子显微镜,Airyscan共聚焦超分辨率显微镜,光学显微镜和X射线微计算机断层扫描.
主要成果:
- 新的体呈现出排列成六个旋转的状细胞,带有波浪边缘的表皮细胞,以及与Sphenophyllales典型的Columinisporites相匹配的in situ子.
- 在Sphenophyllales中建立了一个新的属和物种,Hexaphyllostrobus kostorhysii.
- 重新检查Tetraphyllostrobus表明它也拥有Columinisporites类型的子,这表明它可能与sphenophyllalean有亲缘关系.
结论:
- 发现Hexaphyllostrobus有助于更好地了解宾夕法尼亚州的菌多样性和Columinisporites类型子的流行.
- 这些发现需要对Tetraphyllostrobus进行重新评估,可能将其与Sphenophyllales联系起来,并进一步研究宏观化石证据.
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