(ofMacrodiceras magnum Karczewski, 1969 †)Karczewski, L. (1969). Upper Jurassic Rudistae of the margin of the Holy Cross Mountains, Poland. <em>Acta Palaeontologica Polonica.</em> 14, 395-465.[details] Available for editors [request]
MolluscaBase eds. (2024). MolluscaBase. Diceras magnum (Karczewski, 1969) †. Accessed at: https://molluscabase.org/aphia.php?p=taxdetails&id=1332807 on 2024-09-04
original description(ofMacrodiceras magnum Karczewski, 1969 †)Karczewski, L. (1969). Upper Jurassic Rudistae of the margin of the Holy Cross Mountains, Poland. <em>Acta Palaeontologica Polonica.</em> 14, 395-465.[details] Available for editors [request]