Phylum Chordata Bateson, 1885 - chordates
Class Aves Linnaeus, 1758 - birds
see Subclass Aves Linnaeus, 1758
Subclass Neornithes Gadow, 1893
see Clade Neornithes Gadow, 1893
Superorder Neognathae Pycraft, 1900
see Cohort Neognathae Pycraft, 1900
Order Pelecaniformes Sharpe, 1891
Suborder Fregatae Sharpe
see Infraorder Fregatides Sharpe, 1891
1 Family Fregatidae Degland & Gerbe, 1867 - frigatebirds