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Cygnus paloregonus Cope, 1878
From the collection of NMNH Paleobiology, Smithsonian. Free to download, adapt and use — no permission needed.
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Cenozoic / Quaternary / Pleistocene
NMNH Paleobiology, Smithsonian’s own descriptionCredit lineCygnus paloregonus Cope, 1878. 1897. Noah F. Drake. NMNH Paleobiology, Smithsonian. CC0.