法国中部梅纳特地区古新世的齿龙目昆虫

IF 1.8 3区地球科学 Q2 PALEONTOLOGY

Acta Palaeontologica Polonica Pub Date : 2022-01-01 DOI:10.4202/app.00960.2021

A. Nel, C. Jouault

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引用次数: 6

摘要

尽管古新世是该目历史上的一个关键时期，但目前对它的了解相当有限。本文概述了法国Menat地区古新世的齿龙类化石。我们描述了异翅目巨爪龙menatensis sp. nov.，这是巨爪龙科的第一个化石代表，以及两个双翅目，即失翅目Menatagrion hervetae gen. et sp. nov.和新发现的menatestidae fam。Menatagrion gen. 11 .是古新世首次记录的Dysagrionidae科，其他已知的是一个假定的白垩纪属和几个始新世至中新世属。Menatlestes gen. nov.被推定为lestino总科(Megalestidae和leestidae)的茎群，与该分支最古老的记录相对应。利用这三个新分类群，以及先前描述的Thanetophilosina menatensis, Valerea multicululata，“Lestes”zalesskyi和一个Aeshna种索引。， Menat的蜥目动物总数达7种;异翅目2只，夜翅目5只。此外，我们还提出了新的证据，表明定义头颌翅目亚目的头部特征是由于变形造成的，这种变形在化石中非常常见。我们把头颧翅目作为颧翅目的初级同义词。

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The odonatan insects from the Paleocene of Menat, central France

The current knowledge on the Paleocene Odonata is rather limited despite the fact that it is a crucial period for the history of this order. An overview of the fossil odonatans from the Paleocene of Menat (France) is provided. We describe the anisopteran Macrogomphus menatensis sp. nov., first fossil representative of the family Epigomphidae, together with two zygopteran, viz. the dysagrionid Menatagrion hervetae gen. et sp. nov., and the new family Menatlestidae fam. nov., with its type species Menatlestes palaeocenicus gen. et sp. nov. The genus Menatagrion gen. nov. is the first Paleocene record of the Dysagrionidae, otherwise known by a putative Cretaceous genus and several Eocene to Miocene genera. Menatlestes gen. nov., putatively attributed to the stem-group of the Lestinoidea (Megalestidae and Lestidae), would correspond to the oldest record of this clade. With these three new taxa, and the previously described Thanetophilosina menatensis , Valerea multicellulata , “ Lestes ” zalesskyi , and an Aeshna species indet., the total number of Odonata from Menat goes up to seven species in total; two Anisoptera and five Zygoptera. Furthermore, we propose new evidences showing that the head characters defining the putative suborder Cephalozygoptera are due to deformations, very frequent among the fossil Odonatoptera. We treat the Cephalozygoptera as a junior synonym of Zygoptera.

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来源期刊

Acta Palaeontologica Polonica 地学-古生物学

CiteScore

2.80

自引率

5.60%

发文量

审稿时长

12.5 months

期刊介绍： Acta Palaeontologica Polonica is an international quarterly journal publishing papers of general interest from all areas of paleontology. Since its founding by Roman Kozłowski in 1956, various currents of modern paleontology have been represented in the contents of the journal, especially those rooted in biologically oriented paleontology, an area he helped establish. In-depth studies of all kinds of fossils, of the mode of life of ancient organisms and structure of their skeletons are welcome, as those offering stratigraphically ordered evidence of evolution. Work on vertebrates and applications of fossil evidence to developmental studies, both ontogeny and astogeny of clonal organisms, have a long tradition in our journal. Evolution of the biosphere and its ecosystems, as inferred from geochemical evidence, has also been the focus of studies published in the journal.