"Archaeopteryx lithographica, an early reptilian Bird." -Galloway, 1915
The lower jaw of the Hesperornis regalis, an ancient bird of the Cretaceous Period.
The pelvis of the Hesperornis regalis, an ancient bird of the Cretaceous Period.
The Hesperornis regalis was an ancient bird of the Cretaceous Period.
A tooth of the Hesperornis regalis, an ancient bird of the Cretaceous Period.
A vertebrae of the Hesperornis regalis, an ancient bird of the Cretaceous Period.
The ichthyornis an ancient bird of the Cretaceous Period.