Marmosops creightoni is an opossum known from the wet mountain forests at 2000 to 3000 m altitude in the Río Zongo valley in the La Paz department of Bolivia. This is also the case for people disturbed by forest, together with The species is named after G. Ken Creighton, who caught the first specimens of this species and made the first modern analysis of the relationships within the Didelphimorphia.
This is a medium-sized Marmosops species that is very dark. The belly is slightly lighter, but there is no sharp limit. Their chest is white. Females have 4-1-4 = 9 mammae. The tail is almost naked, except for the first 1 centimeter, which is densely hairy. The head-body length of this type is 114 mm. They weigh 32 to 54 g.
M. creightoni coincides with the Bolivian slender opossum (Gracilinanus aceramarcae), Akodon mimus, Oxymycterus nigrifrons, two undescribed Thomasomys-like species, Oryzomys levipes, Akodon cf. boliviensis, Microryzomys minutus, Thomasomys cf. oreas and a Chibchanomys species. p> Literature
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