es | en | pt | fr
    • Presentation
    • Countries
    • Institutions
    • Get involved
        JavaScript is disabled for your browser. Some features of this site may not work without it.
        View Item 
        •   Home
        • Argentina
        • Gobierno
        • Comisión de Investigaciones Científicas (Argentina)
        • View Item
        •   Home
        • Argentina
        • Gobierno
        • Comisión de Investigaciones Científicas (Argentina)
        • View Item

        Late Miocene capybaras (Rodentia, Cavioidea, Hydrochoeridae): skull anatomy, taxonomy, evolution and biochronology

        Registration in:
        http://digital.cic.gba.gob.ar/handle/11746/5985
        Recurso completo
        http://repositorioslatinoamericanos.uchile.cl/handle/2250/2864704
        Share
        Author
        Vucetich, María Guiomar
        Deschamps, Cecilia Marcela
        Vieytes, Emma Carolina
        Montalvo, Claudia I.
        Institutions
        • Comisión de Investigaciones Científicas (Argentina)
        Abstract
        Fossil capybaras are morphologically extremely varied, but previous studies have disagreed on whether this diversity reflects intraspecific variation or the existence of multiple species. Here, we review the capybaras from the classic Argentinian Late Miocene localities of Paraná River cliffs (“conglomerado osífero” of the Ituzaingó Formation, Entre Ríos), and Chillhué and Guatraché shallow lakes (Cerro Azul Formation, La Pampa), and perform a morphometric analysis of their upper cheek teeth and the posterior portion of the rostrum. Our results confirm that all of the specimens from the “conglomerado osífero” belong to the single species Cardiatherium paranense. In addition, we refer a specimen from Tupungato (Río de los Pozos Formation, Mendoza) to C. paranense, thus expanding its geographical range. The material from La Pampa represents a different taxon, and is here preliminary referred to Cardiatherium aff. orientalis. Our systematic interpretation of Late Miocene capybaras suggests that the early radiation of this group was not as explosive as previously thought, and was likely constrained by the early acquisition of large size, increasing complexity of the cheek teeth, and probably semi-aquatic habits.
        Subjects
        Paleontología

        Show full item record


        Red de Repositorios Latinoamericanos
        + of 2.515.000
        Available publications
        163 Participating institutions
        Dirección de Servicios de Información y Bibliotecas (SISIB)
        Universidad de Chile
        Membership Login
        Featured collections
        • Latin American Theses
        • Argentinean Theses
        • Chilean Theses
        • Peruvian Theses
        Latest collections added
        • Argentina
        • Brazil
        • Colombia
        • México
        Dirección de Servicios de Información y Bibliotecas (SISIB)
        Universidad de Chile
        Red de Repositorios Latinoamericanos | 2006-2018
         

        EXPLORE BY

        Institutions
        Date2011 - 20202001 - 20101951 - 20001901 - 19501800 - 1900

        Browse in Repository Network

        Countries >
        Document type >
        Publication date >
        Institutions >

        Red de Repositorios Latinoamericanos
        + of 2.515.000
        Available publications
        163 Participating institutions
        Dirección de Servicios de Información y Bibliotecas (SISIB)
        Universidad de Chile
        Membership Login
        Featured collections
        • Latin American Theses
        • Argentinean Theses
        • Chilean Theses
        • Peruvian Theses
        Latest collections added
        • Argentina
        • Brazil
        • Colombia
        • México
        Dirección de Servicios de Información y Bibliotecas (SISIB)
        Universidad de Chile
        Red de Repositorios Latinoamericanos | 2006-2018