difference from Neornithes, [25]

Archibuteo, [147], [164];

A. ferrugineus, [164];

A. hemiptilopus, [164];

A. lagopus, [164];

A. sancti johannis, [164];

A. strophiatus, [164]

Arctogaea, [15]

Arctonetta, [114];

A. fischeri, [119]