Korn, Dieter, and Martina Aubrechtová. “New Annulate Carboniferous Orthoconic and Cyrtoconic Cephalopods of the Family Brachycycloceratidae Furnish, Glenister & Hartman, 1962”. European Journal of Taxonomy 1048, no. 1 (March 25, 2026): 1-39. Accessed May 23, 2026. https://europeanjournaloftaxonomy.eu/index.php/ejt/article/view/3231.