After McKenna & Bell, 1997, with Recent species from Nowak, 1991
<==o Sigmodontini Wagner, 1843 (cotton rats; puuvillarotat) [taxonomic history] |--o †Prosigmodon Jacobs & Lindsey, 1981; E.Plioc. NA. | |-- †P. holocuspis Czaplewski, 1987 | |-- †P. chihuahuensis | `-- †P. oroscoi `--o Sigmodon Say & Ord, 1825 [Hesperomys (Sigmodon) Say & Ord, 1825; Lasiomys Burmeister, 1854; Deilemys de Saussure, 1860; Sigmomys Thomas, 1901] E.Plioc.-R. NA., R. SA. CA. (cotton rats) |-- †S. curtisi Gidley, 1922 |-- †S. minor Gidley, 1922 [S. medius Gidley, 1922] |-- S. hispidus (jäykkäkarvapuuvillarotta, puuvillarotta) |-- S. alleni (ruskopuuvillarotta) |-- S. leucotis ()? |-- S. ochrognathus ()? |-- S. mascotensis ()? |--o S. arizonae ()? | |-- S. a. arizonae ()? | `-- S. a. plenus ()? |-- S. fulviventer ()? |-- S. alstoni ()? |?- S. inopinatus ()? `?- S. peruanus ()?
Reference(s):
- Czaplewski, M. J., 1987: Sigmodont rodents (Mammalia; Muroidea; Sigmodontinae) from the Pliocene (Early Blancan) Verde Formation, Arizona.
–Journal of Vertebrate Paleontology: Vol. 7, #2, pp. 183-199 - Martin, R. A., Honey, J. G., Peláez-Campomanes, P., Goodwin, H. T., Baskin, J. A. & Zakrzewski, R. J., 2002: Blancan lagomorphs and rodents of the Deer Park assemblages, Meade County, Kansas.
–Journal of Paleontology: Vol. 76, #6, pp. 1072-1090 - McKenna, M. C. & Bell, S. K., (eds.) 1997: Classification of mammals – above the species level.
–Columbia University Press, New York, 1997, xii-631 - Nowak, R. M., 1991: Walker's Mammals of the World; Part 1.
–The Johns Hopkins University Press, Baltimore and London, 1991, xlviii-642-lxiii - Nowak, R. M., 1991: Walker's mammals of the World; Part 2.
–The Johns Hopkins University Press, Baltimore and London, 1991, xii-643-1629 - Ruez, J. & Dennis R., 2001: Early Irvingtonian (Latest Pliocene) rodents from Inglis 1C, Citrus County, Florida.
–Journal of Vertebrate Paleontology: Vol. 21, #1, pp. 153-171