Mass: 1.1 kg based on Bellows and Mitchell 2002, Layne 1958, and McNab 1992

Abundance: 0.01 to 53.26% (median 0.62%)

Latitudinal range: 32.3° to 56.3°

Habitats: (40), temperate wetland (1)

Found in 41 samples

Canada: Charlie Lake Cave (Zone IV) (Holocene), Keffer (Midden 57, screened) (Holocene), Keffer (Midden 57, floated) (Holocene), DjPp-8 (level A) (Holocene), DjPp-8 (level B) (Holocene), Irving-Johnston (Holocene), Spillsbury Bay (Holocene), Caverne de la Mine (lower infill) (Holocene), Caverne de la Mine (upper infill) (Holocene)

France: Massereau

United States: Ardis (Late Pleistocene), Crystal Ball Cave (Late Pleistocene), Vess Cave (Late Pleistocene), Ripplemead (Late Pleistocene), Bat Cave (Late Pleistocene), Bluegrass (macro) (Holocene), Dust Cave (Zones T and U) (Holocene), Hulme Site (Holocene), McIntosh (Holocene), McKinley Site (Zone A) (Holocene), McKinley Site (Zone B) (Holocene), Watson Brake (6.4 mm fraction) (Holocene), Weber I (Middle Archaic) (Holocene), Weber I (Late Archaic) (Holocene), Dead Indian Creek (Holocene), Itasca Bison Site (Holocene), Pine Hill (Holocene), Otter Creek No. 2 (Zone 3) (Holocene), Cole Gravel Pit (Holocene), Scovill (Holocene), Prairie Creek (Zone D) (Late Pleistocene), Robinson Cave (Late Pleistocene), Meyer Cave (Holocene), Polecat Creek (alluvial gravel) (Late Pleistocene), Prairie Creek (Zone C) (Pleistocene - Holocene), Prairie Creek (Zone B) (Holocene), New Paris Sinkhole No. 4 (Late Pleistocene), Natural Chimneys (Late Pleistocene), Flagg Swamp Rockshelter (Archaic) (Holocene), Bogue Chitto Creek (Late Pleistocene), Marmes Rockshelter (Harrison horizon) (Pleistocene - Holocene)

♀ body mass	1470 kg	N = 4	Bellows and Mitchell 2002
♂ body mass	1263 kg	N = 5	Bellows and Mitchell 2002
body mass	906 g	N = 1	Layne 1958
body mass	975 g	N = 1	Layne 1958
body mass	1004.6 kg	N = 30	McNab 1992
♀ ear length	18 mm	N = 4	Bellows and Mitchell 2002
♂ ear length	13 mm	N = 5	Bellows and Mitchell 2002
♀ hind foot length	82 mm	N = 4	Bellows and Mitchell 2002
♂ hind foot length	67 mm	N = 1	Bailey 1902
♂ hind foot length	82 mm	N = 5	Bellows and Mitchell 2002
hind foot length	68 mm	N = 6	Bailey 1902
hind foot length	82 mm	N = 1	Layne 1958
hind foot length	83 mm	N = 1	Layne 1958
♂ skull width	35 mm	N = 1	Bailey 1902
♀ tail length	244 mm	N = 4	Bellows and Mitchell 2002
♂ tail length	202 mm	N = 1	Bailey 1902
♂ tail length	246 mm	N = 5	Bellows and Mitchell 2002
tail length	204 mm	N = 6	Bailey 1902
tail length	245 mm	N = 1	Layne 1958
tail length	270 mm	N = 1	Layne 1958
♀ total body length	579 mm	N = 4	Bellows and Mitchell 2002
♂ total body length	470 mm	N = 1	Bailey 1902
♂ total body length	576 mm	N = 5	Bellows and Mitchell 2002
total body length	463 mm	N = 6	Bailey 1902
total body length	550 mm	N = 1	Layne 1958
total body length	667 mm	N = 1	Layne 1958
♂ upper tooth row length	15 mm	N = 1	Bailey 1902

See also Ondatra, Ondatra annectens, Ondatra idahoensis, Ondatra sp.