Dental variation in Hypnomys mahonensis Bate, 1918 (Gliridae, Rodentia, Mammalia) from the newly rediscovered type-locality of Punta Esquitxador 17 (Menorca, Balearic Islands, Western Mediterranean)
Quintana Cardona, Josep (Institut Català de Paleontologia Miquel Crusafont)
Agustí, Jordi, 1954- (Institut Català de Paleoecologia Humana i Evolució Social)

Date:	2022
Abstract:	Punta Esquitxador 17 is a small coastal site of karstic origin, formed by very hard red silt, rich in remains of small vertebrates. This is the same site from which Dorothea M. A. Bate recovered and described, in 1918, Hypnomys mahonensis. The limited number of specimens of the type series (a left maxilla, a right mandible and an M1) has, historically, limited the adequate knowledge of this species. The recovery of new remains has allowed us to describe the different dental morphotypes and their comparison with other species of the genus. Overall, H. mahonensis has simpler tooth patterns than Hypnomys morpheus, with isolated ridges in upper M1. Moreover, H. mahonensis displays a small transverse ridge connecting the anteroloph and protoloph. This is a derived feature absent in H. morpheus. Two different hypotheses have been put forward to explain the origin of H. mahonensis: 1) is considered the final representative of a phyletic lineage originating in Menorca; 2) H. mahonensis evolved from the arrival to Menorca of a late representative of the existing phylogenetic line in Mallorca (H. morpheus). ThIsstudyalso made possible to confirm the taxonomic validity of this species and its geographical and temporal distribution.
Grants:	Agencia Estatal de Investigación PID2020-117118GB-I00 Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-960 Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-859
Rights:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades.
Language:	Anglès
Document:	Article ; recerca ; Versió acceptada per publicar
Subject:	Insular evolution ; Menorca's third stage of fauna ; Pleistocene ; Chronospecies ; Independent phylogenetic lineage
Published in:	Historical biology, Vol. 35, Issue 5 (April 2022) , p. 721-733, ISSN 1029-2381

DOI: 10.1080/08912963.2022.2063054

Postprint 34 p, 3.9 MB

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Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > Institut Català de Paleontologia Miquel Crusafont (ICP)
Articles > Research articles
Articles > Published articles