title: Phylogenetic signal in molar dental shape of extant and fossil catarrhine primates.
abstract: Morphology has been widely used for inferring the phylogenies of numerous taxonomic groups. Recent molecular studies performed on extant non-human primates, however, have cast doubt on the reliability of cranial and postcranial characters for characterizing evolutionary affinities. Because molecular evidence is often not available for fossil specimens, detecting phylogenetic signals in anatomical features is of great relevance. Here we have analyzed molar (M1 and M2) crown shape by means of geometric morphometrics in a large sample of both extant and fossil Miocene catarrhine primates to detect the phylogenetic signal in molar morphometry. Results support that molar shape carries a strong phylogenetic signal, mostly at the superfamily level but also to some extent at the family level. Dietary factors, however, appear to have less influence, especially for M2. The Miocene Pliopithecoidea, Cercopithecoidea, and Hominoidea superfamilies clearly grouped according to the expected taxonomic affinities with the extant groups, although some discrepancies were found depending on the tooth considered. Our findings suggest that although molar crown shape can be used as a reliable proxy for establishing taxonomic affinities of catarrhine fossil primates with extant groups, a significant amount of interspecific variation exists, indicative of derived adaptations at the genus or species level.
authors.affiliation: Secc. Antropologia, Departament de Biologia Animal, Universitat de Barcelona, Av. Diagonal 643, 08028 Barcelona, Spain; Grup d'Estudi de l'Evolució dels Homínids i altres Primats, Universitat de Barcelona, Barcelona, Spain.
authors.forename: Beatriz
authors.initials: B
authors.lastname: Gamarra
authors.affiliation: Secc. Antropologia, Departament de Biologia Animal, Universitat de Barcelona, Av. Diagonal 643, 08028 Barcelona, Spain; Grup d'Estudi de l'Evolució dels Homínids i altres Primats, Universitat de Barcelona, Barcelona, Spain.
authors.forename: Mónica
authors.initials: M
authors.lastname: Nova Delgado
authors.affiliation: Grup d'Estudi de l'Evolució dels Homínids i altres Primats, Universitat de Barcelona, Barcelona, Spain; Departamento de Biotecnología, Facultad de Ciencias, Universidad de Alicante, 99, 03080 Alicante, Spain.
authors.forename: Alejandro
authors.initials: A
authors.lastname: Romero
authors.affiliation: Secc. Antropologia, Departament de Biologia Animal, Universitat de Barcelona, Av. Diagonal 643, 08028 Barcelona, Spain; Grup d'Estudi de l'Evolució dels Homínids i altres Primats, Universitat de Barcelona, Barcelona, Spain; Center for the Advanced Study of Human Paleobiology, Department of Anthropology, The George Washington University, 800 22nd Street NW, Ste 6000, Washington, D.C. 20052, USA.
authors.forename: Jordi
authors.initials: J
authors.lastname: Galbany
authors.affiliation: Secc. Antropologia, Departament de Biologia Animal, Universitat de Barcelona, Av. Diagonal 643, 08028 Barcelona, Spain; Grup d'Estudi de l'Evolució dels Homínids i altres Primats, Universitat de Barcelona, Barcelona, Spain. Electronic address: martinez.perez.perez@ub.edu.
authors.forename: Alejandro
authors.initials: A
authors.lastname: Pérez-Pérez
mesh_terms: D000818:Animals; D005075:Biological Evolution; D051079:Catarrhini / Q000033:anatomy & histology*; D005580:Fossils / Q000033:anatomy & histology*; D008334:Mandible; D008963:Molar / Q000033:anatomy & histology*; D010802:Phylogeny; D019228:Tooth Crown
keywords: Cercopithecoidea; Geometric morphometrics; Hominoidea; Molar teeth; Phylogenetics; Pliopithecoidea