来自东帕拉提斯晚中新世的一种新海豹突出了过去真海豹(Phocidae)的区域多样性。

IF 3 2区 地球科学 Q1 PALEONTOLOGY
Swiss Journal of Palaeontology Pub Date : 2025-01-01 Epub Date: 2025-06-12 DOI:10.1186/s13358-025-00372-7
Pavlo Otriazhyi, Theodor Obadă, Oleksandr Kovalchuk, Davit Vasilyan, Pavel Gol'din
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引用次数: 0

摘要

中新世期间,真正的海豹在帕拉提提斯陆表盆地以多种形式迅速进化。然而,迄今为止它们的名义分类群大多是基于孤立的肢骨而提出的,它们的分类学一直存在争议。在这里,我们描述了一种新的铰接骨架MCFFM V-150,它是一只中等大小的海豹,具有来自今摩尔多瓦晚中新世的厚骨硬化后颅骨,并为它提出了一个新的属和种——paratethyphoca libera。其特征是在额骨后部有眶上突、长鼻、成比例长的肱骨(占颅骨长度的88%)、短的肱骨三角嵴和低的肩胛骨冈上窝。我们也建议对其他旁泰狮海豹进行这种分类鉴定。系统发育分析表明,在迄今为止所描述的凤仙花科植物中,自由凤仙花属于一类;然而,不能排除它与一只活的冠海豹有密切关系。此外,MCFFM V-150显示的牙齿磨损被解释为吸吮猎物捕获策略的标志,另一种副蜥海豹Monachopsis pontica和活着的胡须海豹Erignathus barbatus也有这种特征。补充信息:在线版本包含补充资料,下载地址:10.1186/s13358-025-00372-7。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A new seal from the Late Miocene of the Eastern Paratethys highlights the past regional diversity of true seals (Phocidae).

True seals rapidly evolved in many forms in the epicontinental basin of Paratethys during the Miocene. However, most of their nominal taxa so far were proposed based on isolated limb bones, and their taxonomy has long been under discussion. Here we describe a new articulated skeleton MCFFM V-150 of a medium-sized seal with pachyosteosclerotic postcranial bones from the Late Miocene of the present-day Moldova and propose a new genus and species for it-Paratethyphoca libera. It is distinguished in the presence of a supraorbital process of the frontal bone in its posterior portion, a long snout, a proportionally long humerus (88% of the skull length), a short deltoid crest of the humerus, and a low supraspinatus fossa of the scapula. We also suggest this taxonomic identification for other Paratethyan seals. Phylogenetic analysis placed Paratethyphoca libera among other stem Phocinae described so far from the Paratethys; however, its close relationship to a living hooded seal Cystophora cristata cannot be ruled out. Additionally, MCFFM V-150 showed tooth wear interpreted as a sign of suction prey capture strategy, shared by another Paratethyan seal Monachopsis pontica and the living bearded seal Erignathus barbatus.

Supplementary information: The online version contains supplementary material available at 10.1186/s13358-025-00372-7.

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来源期刊
Swiss Journal of Palaeontology
Swiss Journal of Palaeontology Earth and Planetary Sciences-Paleontology
CiteScore
4.30
自引率
16.70%
发文量
17
审稿时长
4 weeks
期刊介绍: The Swiss Journal of Palaeontology publishes original research and review articles of interest to the international community in the fields of palaeontology, taxonomy and systematics, while recognising at the same time the importance of documenting high-quality palaeontological data in a regional context. Palaeobiology in combination with alpha taxonomy is a core topic of the journal. Submitted papers should have an appeal as wide as possible, directed towards an international readership. Contributions should not have been simultaneously submitted elsewhere, and the overlap of content between related articles should be minimal. Duplications of text and the use of previously published illustrations without adequate citation are unacceptable. If a manuscript has two or more authors, both or all have to sign to confirm they all were involved in the work and have agreed to its submission. The preferred manuscript language is UK English, but consistently used US English is also acceptable. We encourage the publication of proceedings of international meetings as well as special thematic issues. Short contributions and book reviews are also accepted. An international editorial team as well as guest editors guarantee that the thematic issues as well as all articles in regular issues are peer-reviewed and meet the highest standards.
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