Ricardomys

Ricardomys; Temporal range: Burdigalian–Serravallian PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	Rodentia
Family:	Echimyidae
Subfamily:	†Adelphomyinae
Genus:	†Ricardomys; Walton, 1990
Type species
	Ricardomys longidens; Walton, 1990
Other species
	Ricardomys antiqua Arnal et al., 2026

Ricardomys is an extinct genus of caviomorph rodent that lived in South America from the Burdigalian to the Serravallian stages of the Miocene epoch.

Distribution

The type species, Ricardomys longidens, inhabited the palaeoenvironments of the Villavieja Formation of Colombia and the Ipururo Formation of Peru. The species Ricardomys antiqua is known from the Bala Formation of Peru.

References

↑ "Ricardomys". Paleobiology Database. Retrieved 25 August 2026.
↑ "Ricardomys longidens". Paleobiology Database. Retrieved 25 August 2026.
↑ Arnal, Michelle; Kay, Richard Frederick; Valdivia, Luis Angel; Salenbien, Wout; Morse, Paul E.; Borths, Mathew Robert; Williams, Blythe A.; Riddle, Catherine; Martínez, Jean‐Noël; Gonzales, Lauren A. (23 March 2026). "New Early Miocene hystricognath rodents (Caviomorpha) from the Madre de Dios River in the southeastern Peruvian Amazon". Papers in Palaeontology. 12 (2). doi:10.1002/spp2.70064. hdl:11336/288684. ISSN 2056-2799. Retrieved 25 August 2026 – via Wiley Online Library.

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[1] "Ricardomys". Paleobiology Database. Retrieved 25 August 2026.

[2] "Ricardomys longidens". Paleobiology Database. Retrieved 25 August 2026.

[3] Arnal, Michelle; Kay, Richard Frederick; Valdivia, Luis Angel; Salenbien, Wout; Morse, Paul E.; Borths, Mathew Robert; Williams, Blythe A.; Riddle, Catherine; Martínez, Jean‐Noël; Gonzales, Lauren A. (23 March 2026). "New Early Miocene hystricognath rodents (Caviomorpha) from the Madre de Dios River in the southeastern Peruvian Amazon". Papers in Palaeontology. 12 (2). doi:10.1002/spp2.70064. hdl:11336/288684. ISSN 2056-2799. Retrieved 25 August 2026 – via Wiley Online Library.