Marmosops Matschie 1916 (slender opossum)
Mammalia - Didelphimorphia - Didelphidae
Parent taxon: Didelphidae according to J. L. Patton et al. 1996
Sister taxa: Caluromyinae, Caroloameghiana, Coona, Dasyurina, Derorhynchinae, Didelphina, Didelphinae, Didelphys, Eobrasiliinae, Esteslestes, Hyperdidelphys, Macropina, Marmosinae, Paradidelphys, Peramelina, Peratotherium, Phalangistina, Phascolomina, Sparassocynus, Sternbergia, Thylamyinae, Thylatheridium, Thylophorops, Zygolestes, Gracilinanus
Subtaxa: none
Ecology: scansorial omnivore