Hesperornis Lower Jaw
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The lower jaw of the Hesperornis regalis, an ancient bird of the Cretaceous Period.
Keywords
dinosaur bones, Cretaceous fossils, Mesozoic fossils, Hesperornis regalis, ancient bird, Hesperornis jawGalleries
Bird AnatomySource
Dana, James D. New Text-Book of Geology (New York: Ivison, Blakeman & Company, 1883) 320
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