Hydrochoerus holmesi Simpson, 1928

Holmes’s capybara



Taxonomy & Nomenclature

Invalid. A synonym of either Neochoerus aesopi or N. pinckneyi (see White et al., 2022).


Conservation Status

Invalid (synonym)

Last record: Late Pleistocene



Florida, USA


Biology & Ecology










Original scientific description:

Simpson, George Gaylord. (1928). Pleistocene mammals from a cave in Citrus County, Florida. American Museum Novitates 328: 1-16.


Other references:

White, Richard S., Mead, Jim I., Deméré, Thomas A. and Morgan, Gary S. (2022). A new species of Hydrochoerus (Rodentia: Caviidae: Hydrochoerinae) from the Pleistocene of San Diego County, California, USA with remarks on capybara biogeography and dispersal in the Pleistocene of Western North America. Vertebrate Anatomy Morphology Palaeontology 9(1): 131-155. [NB: the author order and title differ at the doi, but the file itself is as referenced here]


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