Kingdom [Animalia] Linnaeus, 1758 - animals
Subkingdom Metazoa Haeckel, 1874
see Kingdom Animalia Linnaeus, 1758
Division Eumetazoa Butschli, 1910
see Subkingdom Eumetazoa Butschli, 1910
Subdivision Bilateralia
Phylum Chordata Bateson, 1885 - chordates
Subphylum Vertebrata Cuvier, 1812 - vertebrates
Class Aves Linnaeus, 1758 - birds
see Subclass Aves Linnaeus, 1758
Subclass Neornithes Gadow, 1893
see Clade Neornithes Gadow, 1893
Order Charadriiformes Huxley, 1867 - shorebirds, gulls, auks
Suborder Alcae Sharpe - auks
see Superfamily Laroidea Vigors, 1825
Family Alcidae Vigors, 1825 - auks
01 Genus Uria Brisson, 1760
02 Genus Alca Linnaeus, 1758
03 Genus Cepphus Pallas, 1769
04 Genus Fratercula Brisson, 1760
05 Genus Lunda Pallas, 1811
see Genus Fratercula Brisson, 1760
06 Genus Cerorhinca Bonaparte, 1828
07 Genus Plautus Linnaeus, 1758
see Genus Alle Link, 1806
08 Genus Aethia Merrem, 1788
09 Genus Cyclorrhynchus Kaup, 1829
see Genus Aethia Merrem, 1788
10 Genus Synthliboramphus Brandt, 1837
11 Genus Brachyramphus Brandt, 1837
12 Genus Ptychoramphus Brandt, 1837
13 Genus Endomychura Oberholser, 1899
see Genus Synthliboramphus Brandt, 1837
14 Genus ‡Pinguinus Bonnaterre, 1791