Abundance: 0.03 to 12.78% (median 0.13%)

Latitudinal range: 36.8° to 72.8°

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

Found in 9 samples

Canada: Churchill Falls, Charlie Lake Cave (Zone IV), Learmonth Site, McNichol Creek (house depression), McNichol Creek (midden)

France: Piémanson Beach

Spain: Cueva de Nerja (Tardiglacial), Cueva de Nerja (Early Holocene)

United States: McIntosh

See also Larus argentatus, Larus canus, Larus fuscus, Larus hyperboreus, Larus marinus, Larus melanocephalus, Larus michahellis, Larus sp.