1Institut Català de Paleontologia Miquel Crusafont (ICP), Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Barcelona, Spain, E-mail: [email protected], [email protected], 2ICREA at the Institut Català de Paleontologia Miquel Crusafont (ICP), Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Barcelona, Spain, E-mail: [email protected]
Thursday All day, Clinch Concourse
A new adapoid primate genus attributed to the tribe anchomomyini has been identified from the collections of the Institut Català de Paleontologia Miquel Crusafont. The material consists of a right maxilla fragment with M2/ and M3/ and several isolated teeth ranging from P4/-M3/ and dP/4, P/3-M/3. All the remains were recovered from the classical Southern Pyrenean locality of Sossís (Late Eocene, Headonian, MP17a). The levels in which this primate was found are grey and black marls interpreted as lacustrine deposits. Additional faunal remains from this site such as those attributed to amphibians and reptiles, together with microchoerine primates are now under study. This new anchomomyin differs from all the other members of this tribe in presenting no enamel wrinkling, in its buccolingually compressed P4/, upper molars with no pericone, medium-sized hypocone, straight postcingulum and incipient mesostyle, and the extremely-reduced metacone in the M3/, lower premolars with no paraconid and discontinuous buccal and lingual cingulids, hypoconid present in the P/4 together with a trace of a metaconid. Its lower molars bear no paraconid and present a premetacristid joining the paracristid and the metaconid, closing the trigonid basin, and its M/3 has a centered and elongated hypoconulid lobe, and the trigonid wider than the talonid. Preliminary phylogenetic analyses suggest that this genus may be more closely related to Mazateronodon than to any other anchomomyin, and also suggests a closer relationship of European anchomomyins with asiadapines and sivaladapids than to other adapiforms.
Study financed by the project CGL2011-27343, Ministerio de Economía y Competitividad, Gobierno de España. J. Marigó has been funded by the Generalitat de Catalunya (predoctoral fellowship 2010FIB176; BE grants 2010BE00758, 2011BE100009 and 2011CTP00011), and the grants from the SYNTHESYS Project (FR-TAF-80 and FR-TAF-1735).