"Archaeopteryx lithographica, an early reptilian Bird." -Galloway, 1915

Archaeopteryx

"Archaeopteryx lithographica, an early reptilian Bird." -Galloway, 1915

The lower jaw of the Hesperornis regalis, an ancient bird of the Cretaceous Period.

Hesperornis Lower Jaw

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.

Hesperornis Pelvis

The pelvis of the Hesperornis regalis, an ancient bird of the Cretaceous Period.

The Hesperornis regalis was an ancient bird of the Cretaceous Period.

Hesperornis Regalis

The Hesperornis regalis was an ancient bird of the Cretaceous Period.

A tooth of the Hesperornis regalis, an ancient bird of the Cretaceous Period.

Hesperornis Tooth

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.

Hesperornis Vertebrae

A vertebrae of the Hesperornis regalis, an ancient bird of the Cretaceous Period.

A vertebrae of the Hesperornis regalis, an ancient bird of the Cretaceous Period.

Hesperornis Vertebrae

A vertebrae of the Hesperornis regalis, an ancient bird of the Cretaceous Period.

The ichthyornis an ancient bird of the Cretaceous Period.

Ichthyornis

The ichthyornis an ancient bird of the Cretaceous Period.