Abstract
Fossil remains of the sigmodontine rodent Holochilus brasiliensis (Desmarest, 1819) from two geographic areas from the state of Rio Grande do Sul, southern Brazil are reviewed and described here. The specimens came from two localities: Quarai River in the western region, which has yielded a dentary with an incisor and molars, and Chui Creek in the eastern region, where a fragmented right dentary and a maxillary fragment with molars were collected. The presence of this taxon in the late Pleistocene of meridional Brazil suggests the existence of perennial water bodies. Keywords : mammals, rodents, late Pleistocene, paleoenvironment, Rio Grande do Sul.
Highlights
The marsh rats of the genus Holochilus Brandt, 1835 (Cricetidae: Sigmodontinae) comprise three extant and one extinct species (Pardiñas and Teta, 2011)
The only records in the literature consist of a dentary assigned to Holochilus brasiliensis (Desmarest, 1819) from the upper Pleistocene deposits of the Quaraí River (Oliveira, 1992); a molar of a Cricetidae aff
We review the presence of the marsh rat Holochilus brasiliensis in the upper Pleistocene beds of the State of Rio Grande do Sul, contributing to the knowledge of the southern Brazilian fossil rodents
Summary
The marsh rats of the genus Holochilus Brandt, 1835 (Cricetidae: Sigmodontinae) comprise three extant and one extinct species (Pardiñas and Teta, 2011). Palavras-chave: mamíferos, roedores, Pleistoceno final, paleoambiente, Rio Grande do Sul. On the presence of Holochilus brasiliensis (Desmarest, 1819) (Rodentia: Cricetidae: Sigmodontinae) in the late Pleistocene
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