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.
We report a case of nasal rhinosporidiosis in a dog native to Uruguay, being the sixth report of Rhinosporidium seeberi infection in this host from South America. Diagnosis was made by histopathology of biopsied tissue and specific PCR assay from nasal swab material. The patient was a 3-year-old male dog, of the Dogo Argentino breed, living in a rural area in southeastern Uruguay. An account of published cases in dogs worldwide is provided. As seen in other hosts, male dogs seem to present a predisposition for acquiring the disease.
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