Abundance: 0.02 to 0.31% (median 0.07%)

Latitudinal range: 36.8° to 56.3°

Habitats: (5) only

Found in 5 samples

Canada: Charlie Lake Cave (Zone IV), McNichol Creek (house depression), McNichol Creek (midden)

Spain: Cueva de Nerja (Early Holocene)

United States: McIntosh

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