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Diademodon tetragonus Seeley, 1894
From the collection of NMNH Paleobiology, Smithsonian. Free to download, adapt and use — no permission needed.
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Mesozoic / Triassic / Early / Cynognathus zone
NMNH Paleobiology, Smithsonian’s own descriptionCredit lineDiademodon tetragonus Seeley, 1894. 1961. James W. Kitching. NMNH Paleobiology, Smithsonian. CC0.