Eumysopinae Rusconi 1935

Eumysopinae Rusconi 1935, Bol. Paleont. Buenos Aires, 5: 2.

Genera: 9 genera with 49 species:

Genus Carterodon Waterhouse 1848 (1 species)

Genus Clyomys Thomas 1916 (2 species)

Genus Euryzygomatomys Goeldi 1901 (1 species)

Genus Hoplomys J. A. Allen 1908 (1 species)

Genus Lonchothrix Thomas 1920 (1 species)

Genus Mesomys Wagner 1845 (4 species)

Genus Proechimys J. A. Allen 1899 (25 species with 16 subspecies)

Genus Thrichomys Trouessart 1880 (3 species with 2 subspecies)

Genus Trinomys Thomas 1921 (11 species with 8 subspecies)

Discussion: Proposed as a subfamily by Patton and Reig (1989:76). This subfamily includes the Oligocene fossil forms, and the most primitive living genera of South American echimyids. Included in the Heteropsomyinae by McKenna and Bell (1997). Molecular data (Leite and Patton, 2002) suggest that the genera Clyomys and Euryzygomatomys are allied with the myocastorids and capromyids and that this subfamily is not a monophyletic unit.