Ammonite “Perisphinctes (Dichotomosphinctes) crotalinus Siemiradzki”
ID no.: ZNG PAN A-I-2/32
Museum: The Geological Museum of the Institute of Geological Sciences, Polish Academy of Sciences
https://muzea.malopolska.pl/en/objects-list/481
Digitalisation: RDW MIC, Małopolska's Virtual Museums project