Web of Science: 4 citas, Scopus: 4 citas, Google Scholar: citas,
Agerinia marandati sp. nov., a new early Eocene primate from the Iberian Peninsula, sheds new light on the evolution of the genus Agerinia
Femenias-Gual, Joan (Institut Català de Paleontologia Miquel Crusafont)
Minwer-Barakat Requena, Raef (Institut Català de Paleontologia Miquel Crusafont)
Marigó Cortés, Judit (Institut Català de Paleontologia Miquel Crusafont)
Poyatos-Moré, Miquel (Universitetet i Oslo. Department of Geosciences)
Moyà Solà, Salvador (Universitat Autònoma de Barcelona. Departament de Biologia Animal, de Biologia Vegetal i d'Ecologia)

Fecha: 2017
Resumen: Background. The Eocene was the warmest epoch of the Cenozoic and recorded the appearance of several orders of modern mammals, including the first occurrence of Euprimates. During the Eocene, Euprimates were mainly represented by two groups, adapiforms and omomyiforms, which reached great abundance and diversity in the Northern Hemisphere. Despite this relative abundance, the record of early Eocene primates from the European continent is still scarce and poorly known, preventing the observation of clear morphological trends in the evolution of the group and the establishment of phylogenetic relationships among different lineages. However, knowledge about the early Eocene primates from the Iberian Peninsula has been recently increased through the description of new material of the genus Agerinia from several fossil sites from Northeastern Spain. - Methods. Here we present the first detailed study of the euprimate material from the locality of Masia de l'Hereuet (early Eocene, NE Spain). The described remains consist of one fragment of mandible and 15 isolated teeth. This work provides detailed descriptions, accurate measurements, high-resolution figures and thorough comparisons with other species of Agerinia as well with other Eurasian notharctids. Furthermore, the position of the different species of Agerinia has been tested with two phylogenetic analyses. - Results. The new material from Masia de l'Hereuet shows several traits that were previously unknown for the genus Agerinia, such as the morphology of the upper and lower fourth deciduous premolars and the P2, and the unfused mandible. Moreover, this material clearly differs from the other described species of Agerinia, A. roselli and A. smithorum, thus allowing the erection of the new species Agerinia marandati. The phylogenetic analyses place the three species of Agerinia in a single clade, in which A. smithorum is the most primitive species of this genus. - Discussion. The morphology of the upper molars reinforces the distinction of Agerinia from other notharctids like Periconodon. The analysis of the three described species of the genus, A. smithorum, A. marandati and A. roselli, reveals a progressive change in several morphological traits such as the number of roots and the position of the P1 and P2, the molarization of the P4, the reduction of the paraconid on the lower molars and the displacement of the mental foramina. These gradual modifications allow for the interpretation that these three species, described from the early Eocene of the Iberian Peninsula, are part of a single evolutionary lineage. The stratigraphical position of Masia de l'Hereuet and Casa Retjo-1 (type locality of A. smithorum) and the phylogenetic analyses developed in this work support this hypothesis.
Nota: Número d'acord de subvenció MINECO/IJCI/2015-26392
Nota: Número d'acord de subvenció MINECO/CGL2014-54373-P
Nota: Número d'acord de subvenció MINECO/BES2012/052951
Nota: Número d'acord de subvenció MINECO/EEBB-I-14-08986
Nota: Número d'acord de subvenció AGAUR/2014/SGR-416
Nota: Número d'acord de subvenció AGAUR/2014/100604
Derechos: Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original. Creative Commons
Lengua: Anglès
Documento: article ; recerca ; publishedVersion
Materia: Adapiformes ; Notharctidae ; Paleogene ; Spain
Publicado en: PeerJ, Vol. 5 (April 2017) , e3239, ISSN 2167-8359

DOI: 10.7717/peerj.3239
PMID: 28462042

35 p, 25.7 MB

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 Registro creado el 2018-07-04, última modificación el 2020-08-08

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