Chinchillidae Bennett 1833

Chinchillidae Bennett 1833, Proc. Zool. Soc. Lond., 1833: 58.

Synonyms: Eriomyidae Burmeister 1854; Lagostomidae Bonaparte 1838; Viacacidae Ameghino 1904; Viscacciidae Roverto 1914 .

Genera: 3 genera with 7 species:

Genus Chinchilla Bennett 1829 (2 species with 2 subspecies)

Genus Lagidium Meyen 1833 (3 species with 20 subspecies)

Genus Lagostomus Brookes 1828 (2 species with 3 subspecies)

Discussion: Placed in the superfamily Chinchilloidea by Woods (1982) and McKenna and Bell (1997). McKenna and Bell (1997) recognized two subfamilies, Chinchillinae and Lagostominae.