PaleoDB taxon number: 96488
Full reference: O. C. Marsh. 1872. Preliminary description of Hesperornis regalis, with notices of four other new species of Cretaceous birds. The American Journal of Science and Arts, series 3 3(13-18):360-365
Sister taxa: Hesperornis altus, Hesperornis chowi, Hesperornis crassipes, Hesperornis gracilis, Hesperornis lumgairi, Hesperornis macdonaldi, Hesperornis mengeli, Hesperornis montana, Hesperornis rossicus
Type specimen: YPM 1200, a partial skeleton (nearly complete entire posterior limbs, parts of the pelvis, several cervical and caudal vertebrae, and numerous ribs). Its type locality is Goblin Hollow, which is in a Santonian marine shale in the Niobrara Formation of Kansas.
Ecology: aquatic piscivore