Figure 4: Biostratigraphic chart used in the present work (Bersac & Bert, 2015) with characteristics of the ventral area of its index species, parallelized with the Standard Ammonite Zonation of the Western Tethys [*] Mediterranean Province (Szives et al., 2024). Subtabulate ventral area is represented in clear grey. Stages C and D are not differentiated not to overburden the figure (see text for explanations).
[*] Editor's note: The wording 'Tethyan,' which was incorrect, was changed to 'Tethys' (see Granier, 2022).