caa a22 4500 44583949X CHVBK 20180317145339.0 cr unu---uuuuu 170323e20111201xx s 000 0 eng 10.1007/s00015-010-0034-0 doi (NATIONALLICENCE)springer-10.1007/s00015-010-0034-0 Iberomeryx minor (Mammalia, Artiodactyla) from the Early Oligocene of Soulce (Canton Jura, NW Switzerland): systematics and palaeodiet [Elektronische Daten] [Bastien Mennecart, Damien Becker, Jean-Pierre Berger] The primitive ruminant genus Iberomeryx is poorly documented, as it is essentially only known from rare occurrences of dental remains. Therefore, the phylogeny and palaeobiology of Iberomeryx remain rather enigmatic. Only two species have been described: the type species I. parvus from the Benara locality in Georgia, and the Western European species I. minor reported from France, Spain, and Switzerland. Iberomeryx savagei from India has recently been placed in the new genus Nalameryx. All these localities are dated to the Rupelian and correspond mainly to MP23 (European mammal reference level). Based on the short height of the tooth-crown and the bunoselenodont pattern of the molars, Iberomeryx has often been considered as a folivore/frugivore. The I. minor remains from Soulce (NW Switzerland) are preserved in Rupelian lacustrine lithographic limestones. One specimen from this locality represents the most complete mandible of the taxon with a partially persevered ramus. Moreover, the unpreserved portion of the mandible left an imprint in the sediment, permitting the reconstruction of the mandible outline. Based on a new description of these specimens, anatomical comparisons and Relative Warp Analysis (24 landmarks) of 94 mandibles (11 fossil and 83 extant) from 31 ruminant genera (10 fossil and 21 extant) and 40 species (11 fossil and 29 extant), this study attempts a preliminary discussion of the phylogeny and the diet of the species I. minor. The results permit to differentiate Pecora and Tragulina on the first principal component axis (first Relative warp) on behalf of the length of the diastema c/cheek teeth, the length of the premolars and the angular process. The mandible shape of I. minor is similar to those of the primitive Tragulina, but it differs somewhat from those of the extant Tragulidae, the only extant family in the Tragulina. This difference is essentially due to a stockier mandible and a deeper incisura vasorum. However, in consideration of the general pattern of its cheek teeth, I. minor as well as possibly Nalameryx should be considered to represent the only known primitive Tragulidae from the Oligocene. Moreover, I. minor should have been a selective browser (fruit and dicot foliage) but, similarly to small Hypertragulidae and Tragulidae, may also have exceptionally consumed animal matter. Swiss Geological Society, 2010 Tragulidae nationallicence Iberomeryx minor nationallicence Mandible shape nationallicence Biostratigraphy nationallicence Systematics nationallicence Palaeodiet nationallicence Mennecart Bastien Department of Geosciences, Earth Sciences, University of Fribourg, Chemin du Musée 6, Pérolles, 1700, Fribourg, Switzerland aut Becker Damien Section d'archéologie et paléontologie, République et Canton du Jura, Office de la Culture, Hôtel des Halles, 2900, Porrentruy 2, Switzerland aut Berger Jean-Pierre Department of Geosciences, Earth Sciences, University of Fribourg, Chemin du Musée 6, Pérolles, 1700, Fribourg, Switzerland aut Swiss Journal of Geosciences SP Birkhäuser Verlag Basel 104(2011-12-01), 115-132 1661-8726 104<115 2011 104 15 https://doi.org/10.1007/s00015-010-0034-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00015-010-0034-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Mennecart Bastien Department of Geosciences, Earth Sciences, University of Fribourg, Chemin du Musée 6, Pérolles, 1700, Fribourg, Switzerland aut NATIONALLICENCE 700 1- Becker Damien Section d'archéologie et paléontologie, République et Canton du Jura, Office de la Culture, Hôtel des Halles, 2900, Porrentruy 2, Switzerland aut NATIONALLICENCE 700 1- Berger Jean-Pierre Department of Geosciences, Earth Sciences, University of Fribourg, Chemin du Musée 6, Pérolles, 1700, Fribourg, Switzerland aut NATIONALLICENCE 773 0- Swiss Journal of Geosciences SP Birkhäuser Verlag Basel 104(2011-12-01), 115-132 1661-8726 104<115 2011 104 15 Metadata rights reserved Springer special CC-BY-NC licence nationallicence SWISSBIB 253208742 BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer