Genus: Mizquedelphys MARSHALL & MUIZON, 1988
Etymology: In reference to the Mizque Province, Bolivia and Greek, delphys, "womb": Mizque (Province) opossum.

Species: pilpinensis MARSHALL & MUIZON, 1988
Etymology:

Holotype: YPFB Pal 6196

Locality: Tiupampa, Bolivia.

Horizon: Mammal-bearing level of the El Molino Formation.

Biostratigraphy:

Age: Maastrichtian Stage, Upper Senonian Subepoch, Upper Gulf Epoch, Late Cretaceous.

Material: A left maxilla with UP3-UM4.