New record in Uruguay of the marsh deer (Blastocerus dichotomus Illiger, 1815) redefines its southern geographic distribution area.

This article reports on the discovery of a complete male skull of the marsh deer in Uruguay, marking the southernmost limit of its range. The skull was found in the departments of Canelones and Maldonado and was estimated to be around 294 years old through radiocarbon dating. Genetic analysis revealed significant genetic diversity and past population dynamics of marsh deer in the region. These findings highlight the need for habitat restoration and future rewilding strategies to protect this species. [Extracted from the article]