Family Myocastoridae Ameghino, 1904 . Anales Soc. Cient. Argentina, 56-58:103.

COMMENTS: Included in Capromyidae by Hall (1981:871), Corbet and Hill (1991:203), and others, but see Woods and Howland (1979), and Woods (1982) for why capromyids and myocastorids are distinct.