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Dinocerata Pl. VI . PLATE VI ' Sl ff 'T ' Cb XII Crisand del Orisand lith NevL'Kaven DINOCERAS MIRABILE Marsh Pl VI Illustration biodiversitylibrary org title Marsh Othniel Charles NameFound Dinoceras mirabile NameConfirmed Dinoceras mirabile Biodiversity Heritage Library National Fossil Day Dinocerata monograph of an