Aktjubocheilus Temporal range:
Famennian)
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Genus: | Aktjubocheilus
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Aktjubocheilus is a genus of oncocerid nautiloids from the Upper Devonian (M Famenian) included in the Acleistoceratidae, a family characterized by depressed, or rarely compressed, exogastric brevicones and cyrtocones.