Neoreomys

Neoreomys; Temporal range:
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Infraclass:	Placentalia
Order:	Rodentia
Superfamily:	Cavioidea
Genus:	†Neoreomys; Ameghino, 1887
Type species
	Neoreomys australis; Ameghino, 1887
Other species
	Neoreomys huilensis Fields, 1957 Neoreomys limatus Ameghino, 1891 Neoreomys pinturensis Kramarz, 2006

Neoreomys is an extinct genus of caviomorph rodent that lived in South America during the Miocene epoch.¹

Taxonomy

Phylogenetic analysis has shown Neoreomys to be a monophyletic genus not closely related to Dasyproctidae, but instead representing a plesiomorphic member of Cavioidea.²

Palaeobiology

Locomotion

Geometric morphometric analysis of the foot of Neoreomys points to it having had a generalised mode of ambulation, in contrast to other Late Oligocene and Early Miocene caviomorphs.³

Palaeoecology

Dental microwear analysis has found that Neoreomys australis was a consumer of fruits and seeds.⁴

References

"PBDB Taxon". Retrieved 18 December 2025.
Urrea-Barreto, Francisco J.; Link, Andrés; Carrillo, Juan D.; Vanegas, Andrés; Perdomo, César A.; Cooke, Siobhán B.; Tallman, Melissa; Pérez, María E. (21 December 2023). "Systematic revision of Neoreomys huilensis Fields, 1957 (Rodentia, Hystricognathi) from the Middle Miocene of La Venta (Villavieja, Colombia)". Geodiversitas. 45 (25). doi:10.5252/geodiversitas2023v45a25. ISSN 1280-9659. Retrieved 18 December 2025 – via BioOne Digital Library.
Candela, Adriana M.; Muñoz, Nahuel A.; García Esponda, César M.; Vizcaíno, Sergio F. (18 November 2024). "Evolutionary trends of caviomorph rodents as elucidated using their oldest foot anatomy". Papers in Palaeontology. 10 (6). doi:10.1002/spp2.1606. hdl:11336/268662. ISSN 2056-2799. Retrieved 18 December 2025 – via Wiley Online Library.
Townsend, K. E Beth; Croft, Darin A. (5 June 2008). "Enamel microwear in caviomorph rodents". Journal of Mammalogy. 89 (3): 730–743. doi:10.1644/06-MAMM-A-336R1.1. ISSN 0022-2372. Retrieved 18 December 2025 – via Oxford Academic.

[1] "PBDB Taxon". Retrieved 18 December 2025.

[2] Urrea-Barreto, Francisco J.; Link, Andrés; Carrillo, Juan D.; Vanegas, Andrés; Perdomo, César A.; Cooke, Siobhán B.; Tallman, Melissa; Pérez, María E. (21 December 2023). "Systematic revision of Neoreomys huilensis Fields, 1957 (Rodentia, Hystricognathi) from the Middle Miocene of La Venta (Villavieja, Colombia)". Geodiversitas. 45 (25). doi:10.5252/geodiversitas2023v45a25. ISSN 1280-9659. Retrieved 18 December 2025 – via BioOne Digital Library.

[3] Candela, Adriana M.; Muñoz, Nahuel A.; García Esponda, César M.; Vizcaíno, Sergio F. (18 November 2024). "Evolutionary trends of caviomorph rodents as elucidated using their oldest foot anatomy". Papers in Palaeontology. 10 (6). doi:10.1002/spp2.1606. hdl:11336/268662. ISSN 2056-2799. Retrieved 18 December 2025 – via Wiley Online Library.

[DentalMicrowearCaviomorphs-4] Townsend, K. E Beth; Croft, Darin A. (5 June 2008). "Enamel microwear in caviomorph rodents". Journal of Mammalogy. 89 (3): 730–743. doi:10.1644/06-MAMM-A-336R1.1. ISSN 0022-2372. Retrieved 18 December 2025 – via Oxford Academic.

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