The aim of this work is to present a new genus and species of Dasypodidae from the Lumbrera Formation (“lower Lumbrera”), early-middle Eocene of Salta Province, northwest Argentina. The new taxon, documented by one specimen, consists of an incomplete skull and jaw with teeth housed in their alveoli, postcranial remains, and isolated osteoderms. Lumbreratherium oblitum, gen. et sp. nov., is characterized by heterodont dentition, with a caniniform as the first tooth, diastema between caniniform and first molariform, teeth with closed roots, and a peculiar morphology of the osteoderms. A phylogenetic analysis indicates that Lumbreratherium oblitum, gen. et sp. nov., and Pucatherium parvum belong to a monophyletic clade in a basal position within the Cingulata. The singularity of the morphological characteristics of these Paleogene armadillos of northwest Argentina reinforces the hypothesis of an intertropical origin of mammal clades different from those of the Paleogene in more austral regions of Argentina. © 2016 Springer Science+Business Media New York
Documento: | Artículo |
Título: | A New Eocene Dasypodid with Caniniforms (Mammalia, Xenarthra, Cingulata) from Northwest Argentina |
Autor: | Herrera, C.M.R.; Powell, J.E.; Esteban, G.I.; Del Papa, C. |
Filiación: | Instituto Superior de Correlación Geológica (INSUGEO), Facultad de Ciencias Naturales e Instituto Miguel Lillo, Universidad Nacional de Tucumán, Miguel Lillo 205, San Miguel de Tucumán, Argentina Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina CICTERRA, Facultad de Ciencias Exactas, Físicas y Naturales, Universidad Nacional de Córdoba, Av. Vélez Sarsfield 1611, Córdoba, Argentina |
Palabras clave: | Early-middle Eocene; Lumbrera Formation; New Dasypodidae; Northwest Argentina |
Año: | 2016 |
Página de inicio: | 1 |
Página de fin: | 14 |
DOI: | http://dx.doi.org/10.1007/s10914-016-9345-x |
Título revista: | Journal of Mammalian Evolution |
Título revista abreviado: | J. Mamm. Evol. |
ISSN: | 10647554 |
Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10647554_v_n_p1_Herrera |