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Proteonina pseudospiralis Cushman & Stainbrook, 1858
From the collection of NMNH Paleobiology, Smithsonian. Free to download, adapt and use — no permission needed.
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29 Jul 2022
NMNH Paleobiology, Smithsonian’s own descriptionCredit lineProteonina pseudospiralis Cushman & Stainbrook, 1858. NMNH Paleobiology, Smithsonian. CC0.