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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.

"Hesperornis regalis, (a fossilized restoration) which stood about three feet high, had blunt teeth in the grooves of both maxilla and mandible, the number being thirty or more below, but considerably less above, where they did not reach to the exterior extremity. The bill was long and pointed, the rami of the lower jaw being entirely separate; the head was rather small, the neck long, and the quadrate bone articulated with the skull by one knob only. The sternum was long, broad, and flat, without keel; the furcula was decidedly reduced, the metatarsus, being little more than a humerus; the tail was fairly long and broad, but had no pygostyle." A. H. Evans, 1900

Restoration of Hesperornis regalis

"Hesperornis regalis, (a fossilized restoration) which stood about three feet high, had blunt teeth…

"Hesperornis regalis, (a fossilized restoration) which stood about three feet high, had blunt teeth in the grooves of both maxilla and mandible, the number being thirty or more below, but considerably less above, where they did not reach to the exterior extremity. The bill was long and pointed, the rami of the lower jaw being entirely separate; the head was rather small, the neck long, and the quadrate bone articulated with the skull by one knob only. The sternum was long, broad, and flat, without keel; the furcula was decidedly reduced, the metatarsus, being little more than a humerus; the tail was fairly long and broad, but had no pygostyle." A. H. Evans, 1900

The Restoration of the Hesperornis Regalis

"Hesperornis regalis, (a fossilized restoration) which stood about three feet high, had blunt teeth…

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.