Jurkovšek, Bogdan, and Bogomir Jelen. “Fossil Lamellibranchs from the Carnian Beds at Orle”. Geologija 31, no. 1 (June 30, 1988): 129–132. Accessed October 26, 2026. https://www.geologija-revija.si/index.php/geologija/article/view/606.