Fig. 2

Stratigraphical setting showing the location of the Boncourt—Queue au Loup (QLP) section within the Late Jurassic schematic composite section of Highway A16 (NW Switzerland). Note that no ammonites were found in the QLP section, and that the correlation of the sequence boundaries is based on Gygi et al. (1998). Ammonoid zones are after Gygi et al. (1998) and Gygi (2000a, b). Hmb is the Hauptmumienbank Member