Abundance: 0.01 to 1.59% (median 0.29%)

Latitudinal range: 34.8° to 56.3°

Habitats: (7), boreal forest/taiga (1)

Found in 8 samples

Canada: Churchill Falls, Charlie Lake Cave (Zone IV), Keffer (Midden 57, screened), McNichol Creek (midden), Spillsbury Bay

Spain: Cueva de Nerja (Early Holocene)

United States: Scovill, Schuiling Cave

See also Mergus merganser, Mergus serrator, Mergus sp.