Fossil endocarps of Menispermaceae from the late Paleocene of Paris Basin, France,Journal of Systematics and Evolution

当前位置： X-MOL 学术 › J. Syst. Evol. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Fossil endocarps of Menispermaceae from the late Paleocene of Paris Basin, France
Journal of Systematics and Evolution ( IF 3.4 ) Pub Date : 2023-11-27 , DOI: 10.1111/jse.13033
Eliise Kara _{1,

2,

3} , Jérémie Bardin ₁ , Dario De Franceschi ₁ , Cédric Del Rio ₁

Affiliation

Menispermaceae are an angiosperm family of mostly climbing plants distributed throughout tropical regions. The fruits in this family have a strong sclerified endocarp and can be used for reliable species-level identifications, even in a fossilized form. New Paleocene-age menispermaceous endocarps have recently been discovered in South America and Asia, while in Europe, they are mostly found in the Eocene. This paper focuses on the study of fossil endocarps belonging to Menispermaceae, found in the Petit-Pâtis locality, which is one of the few Paleocene localities in Europe. The locality is dated to the late Paleocene (57–56 Ma) and the fossils represent flora and fauna in the Paris Basin before the onset of the Paleocene–Eocene Thermal Maximum. Lignitized fossils were photographed and their morphology was analyzed using computed tomography, scanning electron microscope, and geometric morphometric analysis. The analysis of 36 fossils belonging to Menispermaceae revealed that three genera (Stephania, Palaeosinomenium, Tinospora) were present in the late Paleocene of Paris Basin. Differences in internal morphology and a more inflated endocarp base led to a description of a new fossil species—Palaeosinomenium oisensis sp. nov. The occurrence of these genera in the Paleocene of France is consistent with the suggestion that megathermal flora was present in the Paris Basin before the Paleocene–Eocene Thermal Maximum. These three genera are currently the oldest occurrences in Europe, highlighting the connection between paleofloras of the Americas, Europe, and Asia in the Paleocene.

中文翻译：

法国巴黎盆地古新世晚期防己科内果皮化石

防己科是被子植物科，主要分布在热带地区的攀缘植物。该科的果实具有坚固的硬化内果皮，即使是化石形式，也可用于可靠的物种级别鉴定。最近在南美洲和亚洲发现了新的古新世半生植物内果皮，而在欧洲，它们大多发现于始新世。本文重点研究在小帕蒂斯地区发现的防己科内果皮化石，该地区是欧洲为数不多的古新世地区之一。该地点的年代可追溯到古新世晚期（57-56Ma），这些化石代表了古新世-始新世极热爆发之前巴黎盆地的动植物群。对褐化化石进行了拍照，并使用计算机断层扫描、扫描电子显微镜和几何形态分析对其形态进行了分析。对 36 块防己科化石的分析表明，巴黎盆地古新世晚期存在3 个属（ Stephania、Palaeosinomenium、Tinospora ）。内部形态的差异和更加膨胀的内果皮基部导致了对新化石物种的描述——Palaeosinomenium oisensis sp。十一月这些属在法国古新世的出现与古新世-始新世极热之前巴黎盆地中存在超高温植物群的建议是一致的。这三个属目前是欧洲最古老的物种，凸显了美洲、欧洲和亚洲古新世古植物群之间的联系。

更新日期：2023-11-28

点击分享查看原文

点击收藏

阅读更多本刊新发论文本刊介绍/投稿指南