Class Aves Linnaeus, 1758 - birds see Subclass Aves Linnaeus, 1758 Subclass †Sauriurae Haeckel, 1866 see Subclass Archaeornithes Gadow, 1893 Infraclass †Enantiornithes Walker, 1981 Order †Alexornithiformes Brodkorb, 1976 Family †Alexornithidae Brodkorb, 1976 Genus †Sazavis Nessov & Yarkov, 1989 [monotypic] †Sazavis prisca Nessov & Yarkov, 1989