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Plioplarchus sexspinosus Cope
From the collection of NMNH Paleobiology, Smithsonian. Free to download, adapt and use — no permission needed.
About this work
Cenozoic / Paleogene / Oligocene
NMNH Paleobiology, Smithsonian’s own descriptionCredit linePlioplarchus sexspinosus Cope. Aug 1907. U.S. Geological Survey. NMNH Paleobiology, Smithsonian. CC0.