Figure 8 :
Collignoniceras carolinum. Copie de la figure originale d'Orbigny (1841, Pl. 91, figs. 5-6) et termes descriptifs
utilisés.
Figure 8:
Collignoniceras carolinum. Copy of the original figure by Orbigny (1841, Pl. 91, figs. 5-6) and terms used for the description.