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Range DescriptionThe known distribution of Marmosa robinsoni extends from Finca Santa Clara in the western Panamanian province of Chiriquì, eastward across the isthmus to Colombia and northern Venezuela. Although most Venezuelan specimens are from north of the Orinoco River, Rossi et al. (2010) found one specimen from Ciudad Bolivar on the south (right) bank of the river in Bolivar state. The species is also known from several islands on the continental shelf of Central America (e.g., Isla del Rey, Isla Saboga) and South America (Isla Margarita, Trinidad, and Tobago), and from the Caribbean island of Grenada.