Family Caviidae
Capybara relationships are to the south, with extant species in Central and South America. United States Pliocene and Pleistocene occurrences are in the southern portions of the country. Modern species occur along the banks of marshes and streamside habitats (Kurtén and Anderson 1980), and presumably the fossil species had similar tastes.
Literature. Kurén and Anderson 1980.

Sites.
Late Blancan: Cal Tech (Morgan and White 2005).
Literature. Morgan and White 2005.

The specimens from the 111 Ranch site were too fragmentary for specific identification, but assigned to this species since they are essentially topotypical with the type specimens (Tomida 1987).
Sites.
Late Blancan: 111 Ranch (Morgan and White 2005).
Literature. Morgan and White 2005; Tomida 1987.
Last Update: 8 Mar 2013