Stroboceras duplicatum Schmidt, 1951 from the Visean (D2), Orlej quarry at Zalas near Cracow, Poland. 1, 2. Specimens in lateral view.
Stroboceras duplicatum (Schmidt, 1951) from the late Visean (Goa), Galezice, Holy Cross Mts., Poland; specmen in lateral (a) and ventral (b) views.
Stroboceras duplicatum (Schmidt, 1951)from the Visean (D2), Orlej quarry, Zalas near Cracow, Poland; reconstruction of a subadult shell (a) based on several incomplete specimens; variability in the lateral ornamentation.