Andrés Rinderknecht, M. Ubilla, Aldo Manzuetti, P. Toriño, D. Perea
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First record of Tetrastylus Ameghino, 1886 (Rodentia; Dinomyidae) from the Upper Miocene of Uruguay
The first record for Uruguay of the dinomyid rodent Tetrastylus Ameghino, an almost complete right mandible from the upper Miocene Camacho Formation, is described. According to the p4 and m3 morphology it is inferred a juvenile-subadult ontogenetic stage for this specimen.
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