巴塔哥尼亚侏罗纪的肥沃Goeppertella:双翅科-马龙科谱系的马赛克进化。

IF 2.6 3区 生物学 Q2 ECOLOGY
AoB Plants Pub Date : 2023-07-01 DOI:10.1093/aobpla/plad007
Agustina Yañez, Ignacio H Escapa, Thereis Y S Choo
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引用次数: 0

摘要

Goeppertella被认为是一个单系群,其在Gleichenoid科双翅科和Matoniaceae中的确切位置仍然知之甚少。先前描述的Goeppertella标本是基于叶片碎片的,其肥沃的形态由少数保存不良的标本代表。我们根据迄今为止已知的最大可育标本集描述了一个新物种,并根据所描述的化石提供的额外生殖特征讨论了该属的进化史。在阿根廷巴塔哥尼亚早侏罗世沉积物中采集了植物印痕。对标本进行了描述,并开发了硅橡胶模型,以详细检查营养和生殖特征。将新种与其他Goeppertella种进行了比较。最后,在以前发表的双翅科组合矩阵的背景下进行主干分析,使用最大简约标准。新物种的描述是基于以前没有报道过的特征的组合。营养形态与大多数化石和现存的双翅科相似,而生殖形态与化石数量稀少的双翅科形式更相似,在姐妹科Matoniaceae中分布更广。主干分析表明,该新种在龙门科和龙门科的位置不同。通过对生殖和营养性状信号的鉴别分析,讨论了这种不确定性的基础。我们认为Goeppertella是Dipteridaceae家族的成员,因为我们将与Matoniaceae的大多数共同特征解释为该家族的多形条件。相比之下,与双翅蕨科的大多数共同特征代表了该组的拟态。因此,Goeppertella代表了双翅科的一个早期分化属,考虑到脉系特征是最重要的,以确定该科。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Fertile <i>Goeppertella</i> from the Jurassic of Patagonia: mosaic evolution in the Dipteridaceae-Matoniaceae lineage.

Fertile <i>Goeppertella</i> from the Jurassic of Patagonia: mosaic evolution in the Dipteridaceae-Matoniaceae lineage.

Fertile <i>Goeppertella</i> from the Jurassic of Patagonia: mosaic evolution in the Dipteridaceae-Matoniaceae lineage.

Fertile Goeppertella from the Jurassic of Patagonia: mosaic evolution in the Dipteridaceae-Matoniaceae lineage.

Goeppertella has been postulated as a monophyletic group, whose precise position within the Gleichenoid families Dipteriaceae and Matoniaceae, remains poorly understood. Previously described Goeppertella specimens are based on frond fragments and its fertile morphology is represented by a few, poorly preserved specimens. We describe a new species based on the largest collection of fertile specimens known to date and discuss the evolutionary history of the genus based on the additional reproductive characters provided by the fossils described. Plant impressions were collected in Early Jurassic sediments of Patagonia, Argentina. The specimens were described, and silicone rubber casts were developed to examine in detail vegetative and reproductive features. The new species was compared with other Goeppertella species. Finally, a backbone analysis was performed in the context of a previously published combined matrix of Dipteridaceae, using the maximum parsimony criterion. The new species is described based on a combination of features that have not been previously reported. The vegetative morphology shows affinities with most fossil and extant Dipteriaceae, contrasting with the reproductive morphology which is more comparable with the scarce number of fossil dipteridaceous forms and it is more spread in the sister family, Matoniaceae. The backbone analysis indicates that the position of the new species vary among different positions among Dipteridaceae and Matoniaceae. Additional analyses, discriminating the signal of reproductive and vegetative character, are provided to discuss the base of this uncertainty. We consider Goeppertella as a member of the family Dipteridaceae since we interpret most shared features with Matoniaceae as plesiomorphic conditions for the family. In contrast, most shared features with Dipteridaceae represent apomorphies for the group. Thus, Goeppertella would represent an early diverging genus in Dipteridaceae, considering the venation characters as the most important in order to define the family.

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来源期刊
AoB Plants
AoB Plants PLANT SCIENCES-
CiteScore
4.80
自引率
0.00%
发文量
54
审稿时长
20 weeks
期刊介绍: AoB PLANTS is an open-access, online journal that has been publishing peer-reviewed articles since 2010, with an emphasis on all aspects of environmental and evolutionary plant biology. Published by Oxford University Press, this journal is dedicated to rapid publication of research articles, reviews, commentaries and short communications. The taxonomic scope of the journal spans the full gamut of vascular and non-vascular plants, as well as other taxa that impact these organisms. AoB PLANTS provides a fast-track pathway for publishing high-quality research in an open-access environment, where papers are available online to anyone, anywhere free of charge.
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