Hettangian and Sinemurian of Baños de Alhama de Granadareference section for the West-mediterranean Hettangian (Betic Cordillera,Southern Spain)

Two Lower Liassic sections of the Banos de Alhama de Granada outcrop are studied. The Hettangian and Sinemurian ammonite assemblages are detailed and a reinterpretation of the stratigraphy of the outcrop made.The ammonites collected show a clear mediterranean character. A biostratigraphy for the Hettangian and Sinemurian can be made but the correlation with the northeuropean zonal divisions and chronostratigraphy is rather difficult. These are the only west mediterranean sections where a succession of Hettangian ammonite assemblages have been made.