Archaeornithes (extinct subclass)
Esquema
Jerarquía
Eukaryota (domain) > Animalia (kingdom) > Chordata (phylum) > Vertebrata (subphylum) > Aves (class)
Descripción
Extinct subclass of birds having teeth in both jaws, a long, feathered tail, by being less specialized for flight than modern birds, a body elongated and reptilelike, forelimbs with three clawed digits, a small brain and eyes, and bones that are not filled with air (nonpneumatic).