Class Aves Linnaeus, 1758 - birds
see Subclass Aves Linnaeus, 1758
Subclass †Enantiornithes Walker, 1981
see Infraclass Enantiornithes Walker, 1981
Order †Cathayornithiformes Zhou, Jin & Zhang, 1992
Family †Cathayornithidae Zhou, Jin & Zhang, 1992
Genus †Eocathayornis Zhou, 2002
1 †Eocathayornis walkeri Zhou, 2002