Family Castoridae
Genus Castor
Family Caviidae
Genus Cavia
Genus Hydrochoerus
Family Cricetidae
Genus Neotoma
Genus Reithrodontomys
Family Dasyproctidae
Genus Dasyprocta
Family Echimyidae
Genus Diplomys
Genus Proechimys
Family Erethizontidae
Genus Erethizon
Family Geomyidae
Genus Megascapheus
Family Heteromyidae
Genus Chaetodipus
Genus Dipodomys
Family Muridae
Genus Microtus
Genus Mus
Genus Ondatra
Genus Oryzomys
Genus Peromyscus
Genus Rattus
Family Myocastoridae
Genus Myocastor
Family Sciuridae
Genus Ammospermophilus
Genus Callospermophilus
Genus Cynomys
Genus Eutamias
Genus Glaucomys
Genus Ictidomys
Genus Marmota
Genus Neotamias
Genus Notosciurus
Genus Otospermophilus
Genus Sciurus
Genus Tamias
Genus Tamiasciurus
Genus Urocitellus
Genus Xerospermophilus
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