Hesperornis gracilis
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[edit]
Familia: †Hesperornithidae
Subfamilia : Hesperornithinae
Genus: Hesperornis
Species: † Hesperornis gracilis
Name[edit]
Hesperornis gracilis Marsh, 1876
Synonyms[edit]
- Hargeria gracilis (Marsh, 1876) F.A. Lucas, 1903