Mass: 121 g based on Casey and Casey 1979, Feuer 1958, and Chappell 1980

Abundance: 0.03 to 6.25% (median 0.10%)

Latitudinal range: 30.3° to 60.4°

Habitats: (22), temperate broadleaf/mixed forest (1), temperate coniferous forest (1)

Biogeographic distribution: Nearctic, Palearctic, Central Asia, East Asia, Europe

Found in 24 samples

Canada: Bald Range (old growth)

France: Coudoulous I (Faunal Units IV and V) (Middle Pleistocene), Vergisson II (Late Pleistocene), Romain-la-Roche (Middle Pleistocene)

Poland: Borsuka Cave (Layer VI) (Late Pleistocene)

Russia: Kuznetsovka (Middle Pleistocene), Chagyrskaya Cave (Layer 5) (Late Pleistocene), Cheremukhovo-1 (Bed 3) (Holocene), Cheremukhovo-1 (Bed 4) (Holocene), Cheremukhovo-1 (Bed 5) (Holocene), Cheremukhovo-1 (Bed 9) (Late Pleistocene), Cheremukhovo-1 (Bed 10) (Late Pleistocene), Cheremukhovo-1 (Bed 11) (Late Pleistocene), Cheremukhovo-1 (Bed 12) (Late Pleistocene), Imanay Cave (Pleistocene Layer 4) (Late Pleistocene), Imanay Cave (Holocene Layer 4) (Holocene), Khayrgas Cave - Layer 6 (1998-1999 pit) (Late Pleistocene), Khayrgas Cave - Layer 7 (1998–1999 pit) (Late Pleistocene), Chernyshevskaya-III Cave (layer 3) (Holocene)

Spain: Imanolen Arrobia (Late Pleistocene)

United States: North of the Michigamme Reservoir, Silver Creek (Late Pleistocene), Baker Village (Holocene), Schulze Cave (layer C1) (Late Pleistocene)

♀ body mass	80 g	N = 1	Casey and Casey 1979
♀ body mass	85 g	N = 1	Casey and Casey 1979
♀ body mass	115 g	N = 1	Casey and Casey 1979
♀ body mass	73.9 g	N = 1	Feuer 1958
♂ body mass	223 g	N = 1	Casey and Casey 1979
♂ body mass	231 g	N = 1	Casey and Casey 1979
♂ body mass	119.8 g	N = 3	Feuer 1958
body mass	131 g	N = 1	Chappell 1980
♀ ear length	9 mm	N = 1	Feuer 1958
♂ ear length	10 mm	N = 3	Feuer 1958
♀ hind foot length	30 mm	N = 1	Feuer 1958
♂ hind foot length	42 mm	N = 3	Feuer 1958
♀ tail length	52 mm	N = 1	Feuer 1958
♂ tail length	69 mm	N = 3	Feuer 1958
♀ total body length	226 mm	N = 1	Feuer 1958
♂ total body length	252 mm	N = 3	Feuer 1958

See also Mustela, Mustela altaica, Mustela eversmanii, Mustela itatsi, Mustela kathiah, Mustela nivalis, Mustela nudipes, Mustela palerminea, Mustela praenivalis, Mustela putorius, Mustela rexroadensis, Mustela sibirica, Mustela sp., Mustela strandi, Mustela strigidorsa