Neochoerus aesopi Leidy, 1853



Taxonomy & Nomenclature

Synonym/s: Hydrochoerus aesopiOromys aesopi; Hydrochoerus robustus Leidy 1886; Neochoerus robustus Leidy 1886


Conservation Status


Last record: Late Pleistocene



Florida, USA












Original scientific description:

Leidy, J. (1853). Remarks on several fossil teeth. Proceedings of the Academy on Natural Sciences of Philadelphia 2: 241.


Other references:

Allen, G. M. (1926). Fossil mammals from South Carolina. Bulletin of the Museum of Comparative Zoology 67(14): 447-467.

Baskin, Jon, Gervais, P. Darrow and Gervais, Camille J. (2020). A Late Pleistocene capybara (Rodentia, Caviidae, Hydrochoerinae) from near Houston, Texas, USA, with a brief review of North American fossil capybaras. Proceedings of the Academy of Natural Sciences of Philadelphia 167(1): 57-68. [Abstract]

Bravo-Cuevas, Victor Manuel and Jiménez-Hidalgo, Eduardo. (2018). Advances on the Paleobiology of Late Pleistocene mammals from central and southern Mexico, pp. 277-313. In: Huard, Gaeten and Gareau, Jeannine (eds.). The Pleistocene: Geography, Geology, and Fauna. New York: Nova Science Publishers.

Carbot-Chanona, Gerardo et al. (2020). Description of the Neochoerus specimens from the late Pleistocene (Rancholabrean) of Chiapas, and comments on the taxonomic identity of the fossil capybaras from other Mexican localities. Boletín de la Sociedad Geológica Mexicana 72(1): 17 pp.

Faunmap working group. 1994 FAUNMAP: a database documenting late Quaternary distributions of mammal species in the United States. Illinois State Museum Scientific Papers 25(1-2), 1-690.

Ferrusquía-Villafranca I., Arroyo-Cabrales J., Martínez-Hernández E., Gama-Castro J., Ruiz-González J., Polaco O.J., Johnson E. 2010 Pleistocene mammals of Mexico: A critical review of regional chronofaunas, climate change response and biogeographic provinciality. Quaternary International 217(1–2), 53-104.

J. Leidy. 1856. Notice of some remains of extinct vertebrated animals. Proceedings of the Academy of Natural Sciences of Philadelphia 163-165

J. Leidy. 1886. Toxodon and other remains from Nicaragua. Proceedings of the Academy of Natural Sciences of Philadelphia 38:275-277

S. G. Lucas, R. Garcia, E. Espinoza, G. E. Alvarado, L. Hde Mendoza and E. Vega. 2008. The fossil mammals of Nicaragua. New Mexico Museum of Natural History and Science Bulletin 44:417-429

Mones, A. (1991). Monographia de la familia Hydrochoeridae (Mammalia: Rodentia). Courier Forschungsinstitut Senckenberg 134: 1-235.

G. S. Morgan and J. A. White. 1995. Bulletin of the Florida Museum of Natural History 37(13)

Oliveira E.V., Kerber L. 2009 Paleontologia e aspectos geológicos das sucessões do fi nal do Neógeno no sudoeste do Rio Grande do Sul, Brasil. Journal of Geoscience 5(1), 21-34.

Rhinehart, Parker David. (2021a). Late Pleistocene rodents from Clark Quarry, a vertebrate fossil locality in southeastern Georgia. MSc thesis, Georgia College & State University.

Rhinehart, Parker David. (2021b). Pleistocene Rodents from Southeast Georgia. Poster presentation.

Smith F.A., Lyons S.K., Ernest S.K.M., Jones K.E., Kaufman D.M., Dayan T., Marquet P.A., Brown J.H., Haskell J.P. 2003 Body mass of late Quaternary mammals. Ecology 84(12), 3403-3403.

Ubilla M., Perea D., Goso Aguilar C., Lorenzo N. 2004 Late Pleistocene vertebrates from northern Uruguay: tools for biostratigraphic, climatic and environmental reconstruction. Quaternary International 114(1): 129-142.

Vucetich, María Guiomar, Deschamps, Cecilia M. and Pérez, María Encarnación. (2015). The first capybaras (Rodentia, Caviidae, Hydrochoerinae) involved in the Great American Biotic Interchange. Ameghiana 52(3): 324-333.

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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