Agerinia smithorum sp. nov., a new early Eocene primate from the Iberian Peninsula.
The new species Agerinia smithorum (Adapiformes, Primates) from the early Eocene of the Iberian Peninsula is erected in this work. An emended diagnosis of the genus is provided, together with a broad description of the new species and comparisons with other samples assigned to Agerinia and other similar medium-sized cercamoniines. The new species is based on the most complete specimen of this genus published to date, a mandible preserving the alveoli of the canine and P1 , the roots of the P2 and all teeth from P3 to M3 . It was found in Casa Retjo-1, a new early Eocene locality from Northeastern Spain. The studied specimen is clearly distinguishable from other cercamoniines such as Periconodon, Darwinius, and Donrussellia, but very similar to Agerinia roselli, especially in the similar height of P3 and P4 and the general morphology of the molars, therefore allowing the allocation to the same genus. However, it is undoubtedly distinct from A. roselli, having a less molarized P4 and showing a larger paraconid in the M1 and a tiny one in the M2 , among other differences. The body mass of A. smithorum has also been estimated, ranging from 652 to 724 g, similar to that of A. roselli. The primitive traits shown by A. smithorum (moderately molarized P4 , large paraconid in the M1 and small but distinct in the M2 ) suggest that it could be the ancestor of A. roselli.
Institut Català de Paleontologia Miquel Crusafont, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Barcelona, Spain.
Joan
J
Femenias-Gual
Institut Català de Paleontologia Miquel Crusafont, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Barcelona, Spain.
Raef
R
Minwer-Barakat
Institut Català de Paleontologia Miquel Crusafont, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Barcelona, Spain.|Centre de Recherches sur la Paléobiodiversité et les Paléoenvironnements (CR2P, UMR 7207), Sorbonne Universités -MNHN, CNRS, UMPC-Paris6-, Muséum National d'Histoire Naturelle, 57 Rue Cuvier, CP38, Paris, F-75005, France.
Judit
J
Marigó
ICREA at Institut Català de Paleontologia Miquel Crusafont and Unitat d'Antropologia Biològica (Department BABVE), Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Barcelona, 08193, Spain.
Salvador
S
Moyà-Solà
D000818:Animals; D000885:Anthropology, Physical; D049628:Body Size; D005580:Fossils; D008334:Mandible / Q000033:anatomy & histology; D011323:Primates / Q000033:anatomy & histology* / Q000145:classification*; D013030:Spain; D014070:Tooth / Q000033:anatomy & histology
Adapiformes; Cercamoniinae; Notharctidae; Paleogene; Spain