Habitats: temperate broadleaf/mixed forest (2), boreal forest/taiga (1)

Found in 19 samples

Canada: DjPp-8 (level A) (Holocene), Grassy Bay (Holocene), Algar

United States: Haw River, Ardis (Late Pleistocene), Vess Cave (Late Pleistocene), Golf Course (Late Pleistocene), Lower Walnut Settlement (Holocene), Watson Brake (6.4 mm fraction) (Holocene), Harris Creek (Holocene), Itasca Bison Site (Holocene), Cole Gravel Pit (Holocene), Meyer Cave (Holocene), Bootlegger Sink (Pleistocene - Holocene), Kathy's Pit (Pleistocene - Holocene), Bull Neck Swamp Research Forest, Marmes Rockshelter (Harrison horizon) (Pleistocene - Holocene), Cumberland Cave (Middle Pleistocene), Inglis 1C (Early Pleistocene)

See also Lontra, Lontra longicaudis