Aktjubocheilus
Aktjubocheilus is a genus of oncocerid nautiloids from the Upper Devonian included in the Acleistoceratidae, a family characterized by depressed, or rarely compressed, exogastric brevicones and cyrtocones.
Aktjubocheilus is a genus of oncocerid nautiloids from the Upper Devonian included in the Acleistoceratidae, a family characterized by depressed, or rarely compressed, exogastric brevicones and cyrtocones.