Olive-gray Thomasomys

The ash-colored Oldfield mouse (Thomasomys cinereus) is a species of rodent in the genus Thomasomys. It is found in montane forests of the Department of Cajamarca in northern Peru, at elevations of 1,524 to 3,818 metres (5,000 to 12,526 ft). Until 2023, it was thought to be more widely distributed, ranging into southern Ecuador, but these populations are now identified as three separate, closely related species, T.

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Thomasomys es un género de roedores de la familia Cricetidae,​ que se encuentran en los Andes, entre Venezuela y Bolivia, a un altitud entre 1. 500 y 4. 300 [[m s.