Subclass Avialae Gauthier, 1986
see Clade Avialae Gauthier 1986
Infraclass Aves Linnaeus, 1758
see Subclass Aves Linnaeus, 1758
Parvclass Neornithes Gadow, 1893
see Subclass Neornithes Gadow, 1893
Cohort Neognathae Pycraft, 1900
Subcohort Neoaves Sibley et al., 1988
Division Terrestrornithes B.C. Livezey & R.L. Zusi, 2007
Subdivision Telmatorae Lowe, 1931
Superorder Charadriimorphae Huxley, 1867
Order Charadriiformes Huxley, 1867 - shorebirds, gulls, auks
Suborder Lari Sharpe, 1891 - gulls and allies
Infraorder Alcides Sharpe, 1891
Family Alcidae Vigors, 1825 - auks