Mammalia - Rodentia - Cricetidae
Parent taxon: Sigmodontinae according to R. A. Martin et al. 2023
See also D'Elía 2003, Lindsay 2008, Pacheco Castro et al. 2019 and Steppan et al. 2004
Sister taxa: Abrothrix, Chelemys, Cordimus, Delomys, Euneomys, Geoxus, Handleyomys, Holochilus, Honeymys, Ichthyomyini, Ichthyurodon, Irenomys, Juliomys, Lundomys, Melanomys, Microryzomys, Nectomys, Noronhomys, Oligoryzomys, Oryzomyalia, Oryzomyini, Panchomys, Phyllotini, Pseudoryzomys, Rhipidomys, Scolomys, Thomasomys, Wiedomyini, Wilfredomys
Subtaxa: Jacobsomys Lindsaymys Prosigmodon Sigmodon Symmetrodontomys
Type: Sigmodon
Ecology: ground dwelling herbivore
Distribution:
• Quaternary of Mexico (6 collections), Panama (1), Peru (2), United States (87: Arizona, California, Florida, Georgia, Kansas, New Mexico, South Carolina, Texas), Venezuela (2)
• Blancan of Mexico (4), United States (99: Arizona, California, Colorado, Florida, Kansas, Nebraska, New Mexico, Texas)
• Pliocene to Pleistocene of United States (1: Florida)
• Hemphillian of Mexico (6), United States (5: California, Indiana, Texas)
• Miocene of United States (1: California)
Total: 214 collections including 236 occurrences