Aubrechtová, Martina, and Dieter Korn. “Taxonomy and Ontogeny of the Lituitida (Cephalopoda) from Orthoceratite Limestone Erratics (Middle Ordovician) ”. European Journal of Taxonomy 799, no. 1 (March 8, 2022): 1–108. Accessed April 24, 2026. https://ejt.sandbox.publicknowledgeproject.org/index.php/ejt/article/view/1681.