Mammalia, Artiodactyla, Cervidae, Blastocerus dichotomus, municipality of Barreiras do Piauí, State of Piauí, Northeastern Brazil: Distribution extension.

The article offers the authors' views on the study regarding the geographic distribution of marsh deer Blastocerus dichotomus in Northern Brazil particularly at the Nascentes do Rio Parnaíba National Park (NRPNP). They note that various authors confirmed the origin of B. dichotomus in Cerrado, but W. Tomas, M. D. Beccaceci, and L. Pinder asserted the extinction of this species in the region due to hunting and habitat loss. According to C. L. Miranda and G. S. Alencar, traditional hunting is rampant for people residing near the park to provide meat of slaughtered animals to nearby cities. The authors also mentions the habitat changes in Piaui and Maranhâo because of expanding agricultural grasslands. They add that immediate attention for conservation of this species is required.