naa a22 4500 510808603 CHVBK 20180411083430.0 cr unu---uuuuu 180411e20130301xx s 000 0 eng 10.1007/s12542-012-0143-3 doi (NATIONALLICENCE)springer-10.1007/s12542-012-0143-3 Early adaptive radiations of Aplodontoidea (Rodentia, Mammalia) on the Holarctic region: systematics, and phylogenetic and paleobiogeographic implications [Elektronische Daten] [Monique Vianey-Liaud, Helder Gomes Rodrigues, Laurent Marivaux] The Aplodontoidea, now restricted to only one North American species (Aplodontia rufa), have shown a wide Holarctic extension since the Upper Eocene. As their fossil record is poor, their phylogenetic relationships and the origins of their successive radiations remain unclear. We perform here phylogenetic analyses, primarily based on dental evidence (94 dental of 97 characters), restricted to Paleogene and early Miocene taxa (46 taxa) in order to avoid biases introduced by substantially derived (divergent) taxa. We confirm the inclusion of some problematic genera such as Cedromus or Douglassciurus within Sciuroidea rather than in Aplodontoidea. Ephemeromys and Lophallomys appear as the most basal members of the Aplodontoidea, and Epeiromys is the closest outgroup of the Sciuroidea-Aplodontoidea clade. The relationships among the "prosciurines” remain unclear, with paraphyletic genera such as Prosciurus and Haplomys. Their diagnoses are reevaluated and a new genus is described. The Aplodontidae, including the clade of the latter, and Haplomys liolophus display a dichotomy between Ansomyinae and Aplodontinae, the two crown groups. The first clade formed by the European species argoviensis and descendens (referred to a new genus) can be proposed as a sister group of the species of Ansomys. The second branch of the dichotomy includes the European Plesispermophilus and Sciurodon as basal groups. The species of Parallomys do not form a clade, and the genus appears paraphyletic. The last dichotomy separates the Allomys clade from the ‘meniscomyine' clade. Comparisons of the selected species allow consideration of their patterns of dental evolution (e.g. enlargement of P4, development of a metaloph—protoloph disto-mesial connection, of crescentic shape in main cusps and ectoloph, of a buccal protruding compressed mesostyle, of a metastylid crest or an anterior spur of the hypoconid, etc.). The split between sciuroids and aplodontoids occurred in North America, and then aplodontoids dispersed rapidly throughout the whole Holarctic region. The first aplodontid adaptive radiation took place either in North America or in Asia. Periodic exchanges occurred between Europe, Asia and North America, and the last radiations (meniscomyines) were restricted in North America. Springer-Verlag, 2012 Rodentia nationallicence Aplodontoidea nationallicence Systematics nationallicence Cladistics nationallicence Teeth nationallicence Paleogene nationallicence Early Miocene nationallicence Adaptive radiations nationallicence Rodentia nationallicence Aplodontoidea nationallicence Systematik nationallicence Kladistik nationallicence Zähne nationallicence Paläogen nationallicence Frühes Miozän nationallicence Adaptative nationallicence Radiationen nationallicence Vianey-Liaud Monique Laboratoire de Paléontologie, Institut des Sciences de l'Évolution de Montpellier (ISE-M, UMR-CNRS 5554), Case Courrier 064, Université Montpellier 2, Place Eugène Bataillon, 34095, Montpellier Cedex 5, France aut Gomes Rodrigues Helder Laboratoire de Paléontologie, Institut des Sciences de l'Évolution de Montpellier (ISE-M, UMR-CNRS 5554), Case Courrier 064, Université Montpellier 2, Place Eugène Bataillon, 34095, Montpellier Cedex 5, France aut Marivaux Laurent Laboratoire de Paléontologie, Institut des Sciences de l'Évolution de Montpellier (ISE-M, UMR-CNRS 5554), Case Courrier 064, Université Montpellier 2, Place Eugène Bataillon, 34095, Montpellier Cedex 5, France aut Paläontologische Zeitschrift Springer-Verlag 87/1(2013-03-01), 83-120 0031-0220 87:1<83 2013 87 12542 https://doi.org/10.1007/s12542-012-0143-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s12542-012-0143-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Vianey-Liaud Monique Laboratoire de Paléontologie, Institut des Sciences de l'Évolution de Montpellier (ISE-M, UMR-CNRS 5554), Case Courrier 064, Université Montpellier 2, Place Eugène Bataillon, 34095, Montpellier Cedex 5, France aut NATIONALLICENCE 700 1- Gomes Rodrigues Helder Laboratoire de Paléontologie, Institut des Sciences de l'Évolution de Montpellier (ISE-M, UMR-CNRS 5554), Case Courrier 064, Université Montpellier 2, Place Eugène Bataillon, 34095, Montpellier Cedex 5, France aut NATIONALLICENCE 700 1- Marivaux Laurent Laboratoire de Paléontologie, Institut des Sciences de l'Évolution de Montpellier (ISE-M, UMR-CNRS 5554), Case Courrier 064, Université Montpellier 2, Place Eugène Bataillon, 34095, Montpellier Cedex 5, France aut NATIONALLICENCE 773 0- Paläontologische Zeitschrift Springer-Verlag 87/1(2013-03-01), 83-120 0031-0220 87:1<83 2013 87 12542 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer