Reappraisal of ‘chronospecies’ and the use of Arvicola (Rodentia,Mammalia) for biochronology |
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| Authors: | Elise Escudé ,Sophie Montuire,Emmanuel Desclaux,Jean-Pierre Qué ré ,Elodie Renvoisé ,Marcel Jeannet |
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| Affiliation: | 1. CNRS UMR 6569, Institut de Paléontologie Humaine, 1 rue René Panhard, F-75013 Paris, France;2. CNRS UMR 5561, Biogéosciences & EPHE, Ecole Pratique des Hautes Etudes, Université de Bourgogne, 6 bd Gabriel, F-21000 Dijon, France;3. Laboratoire départemental de Préhistoire du Lazaret, 33bis bd Frank Pilatte, F-06300 Nice, France;4. INRA UMR 1062, CBGP (Centre Biologie et Gestion des Populations), Campus International de Baillarguet, CS 30 016, F-34988 Montferrier/Lez, France;5. CNRS UMR 5561, Biogéosciences, Université de Bourgogne, 6 bd Gabriel, F-21000 Dijon, France;6. ARPA (Association de Recherche Paléoécologique en Archéologie) 2 rue du 19 Mars 1962, F-71850 Charnay-lès-Macon, France |
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| Abstract: | The water vole, genus Arvicola, is characterised by a broad geographic distribution throughout Europe and is widespread during the late Middle and Upper Pleistocene. This genus is used as a major biostratigraphic tool within the Quaternary. Specific determinations using the Schmelzband-Differenzierung-Quotient or SDQ have identified many chronospecies within the fossil species Arvicola cantiana (Hinton, 1910). As SDQ calculation remains limited, this study reappraises the Arvicola genus in terms of morphodiversity and morphospace using outline analysis which takes into account the tooth as a whole. Outline analysis suggests that one single species of Arvicola, A. cantiana, was present during the Pleistocene. This species shows great variability with no trends or patterns in morphospace. Thus, these results call into question the reliability of SDQ for specific determinations and throw doubt on the biochronological framework based on Arvicola. |
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| Keywords: | Rodentia Arvicola Enamel quotient Morphology Outline analysis Biochronology |
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