Superfamily Alcoidae Stejneger 1885 (shorebird)
Aves - Charadriiformes - Alcoidae
Alternative spelling: Alcoidea
Parent taxon: Charadriiformes according to O. P. Hay 1930
See also Hay 1902
Sister taxa: Alcae, Burhinidae, Charadrii, Charadriisimilis, Chionidae, Cimolopterygidae, Dakotornithidae, Elseyornis, Erythrogonys, Graculavidae, Graculavus, Haematopodidae, Hydrophasianus, Jacanidae, Lari, Limicolae, Panalcidae, Parrae, Pedionomae, Pedionomidae, Peltohyas, Phegornis, Pluvianellus, Pluvianidae, Recurvirostridae, Rhinoptilus, Sarjeantopodus, Scolopaci, Scolopacidae, Stercorariidae, Telmatornis, Telmatornithidae, Thinocoridae, Thinornis, Turnicidae, Volgavis
Subtaxa: Alcidae
Ecology: ground dwelling carnivore