Archaeornithes (extinct subclass)
- Scope note
- 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).
- Date of creation: 29-Apr-2024
Accepted term: 29-Apr-2024