Fig. 2

Stratigraphic sections at Sostegno. a complete section of the Sostegno area, after Decarlis et al. (2017), modified, with a sample of breccia with oxidized reddish matrix, outcropping in the Sostegno village (southern area). Algae and crinoids cited by Decarlis et al. (2017) are indicated. The arrow indicates a possible stratigraphic position of the studied section; b studied section with lithology and fossils, on the right: corresponding samples; c the section exposed along road SP 64 (part), whit descriptions of lithology and palaeontological content (red lines indicate the boundaries of lithological units and inclination of beds)