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2D geometric morphometrics reveals temporal patterns in the evolution of modern and Pleistocene Arvicola (Rodentia, Cricetidae) in Europe

Identificadores del recurso

Palaeontologia Electronica, (29.3.a35) (2026)

19353952

10948074

http://hdl.handle.net/11093/12795

10.26879/1683

https://palaeo-electronica.org/content/2026/5941-temporal-evolution-of-arvicola-molar-morphology

Procedência

Ficha

Título:: 2D geometric morphometrics reveals temporal patterns in the evolution of modern and Pleistocene Arvicola (Rodentia, Cricetidae) in Europe
Tema:: 2416 Paleontología
Descrição:: This study applies a comprehensive two-dimensional (2D) geometric morphometric framework to investigate dental morphological variation in modern and Pleistocene populations of the genus Arvicola. A reference dataset of 390 first lower molars (m/1) representing four extant species (A. amphibius, A. sapidus, A. italicus, and A. persicus) was analysed using Elliptic Fourier Analysis combined with multivariate statistics (PCA, MANOVA, LDA, CDA, Random Forest, and Mahalanobis distances). All modern species of Arvicola exhibit highly significant morphological differences, demonstrating that m/1 outlines shape reliably discriminates species-specific variation. This validated classification framework was applied to fossil assemblages from five well-dated localities spanning the late Middle Pleistocene to Upper Pleistocene (MIS 6 to MIS 3). The MIS 6 assemblage from Lazaret Cave displays a heterogenous and intermediate morphospace distribution, reflecting the presence of archaic lineages attributed to Arvicola ex gr. cantianus/amphibius and Arvicola ex gr. cantianus/sapidus. By MIS 5.5 (Baume Moula-Guercy), Arvicola amphibius-like morphologies dominate, although several specimens retain plesiomorphic traits. In contrast, MIS 3 assemblages (Abauntz Cave, Cova Eirós, and Trou Al'Wesse) exhibit predominantly modern morphologies, with high classification agreement (up to 100%) and clear species-level assignment. A temporal trend emerges in which discrimination accuracy and morphological distinctiveness; Ministère de la Culture (Francia); Xunta de Galicia | Ref. ED481B 2023/040
Idioma:: English
Relação:: info:eu-repo/grantAgreement/EC/HE/101205968
Autor/Produtor:: Desclaux, Emmanuel; Lindahl, Amanda; Kalthoff, Daniela C.; Kovalchuk, Oleksandr; Centeno Cuadros, Alejandro; Román, Jacinto; Arlegi, Mikel; Arteaga Brieba, Andion; Barkaszi, Zoltán; Cohen, Jessica; Defleur, Alban; Fernández García, Mónica; Flas, Damien; Frafjord, Karl; Knul, Monika Vlasta; de Lombera Hermida, Arturo; Mahmoudi, Ahmad; Milchev, Boyan; Nadachowski, Adam; Pazonyi, Piroska; Rey Rodríguez, Iván; Rodríguez-Álvarez, Xosé Pedro; Bonhomme, Vincent; Dalén, Lové; Stewart, John R.
Editor:: Palaeontologia Electronica; Ecoloxía e bioloxía animal; Ecoloxía e evolución da vida na Terra
Direitos:: Attribution-NonCommercial-ShareAlike 4.0 International; https://creativecommons.org/licenses/by-nc-sa/4.0/; openAccess
Data:: 2026-09-16T08:40:16Z; 2026; 2026-09-15T09:06:24Z
Tipo de recurso:: article

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2. < dc:creator > Desclaux, Emmanuel </ dc:creator >
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