Anyway, the main marker of the Rhaetian base, conodont Misikella posthernsteini, has been recovered at level 45 m. Radiolarians are also present, but only in the medium part of the section. Two assemblages have been recovered: Betraccium deweveri, typical of upper Norian; and Proparvicingula moniliformis, typical of the lower Rhaetian. Chemostratigraphy The record of the stable carbon isotope 13C from organic matter (δ13Corg) shows a large negative shift (~6‰) around the Norian-Rhaetian boundary, which indicates a perturbation in the carbon cycle. This shift lead to a negative peak of -29.95‰ that occurs at the same level of the First Appearance Datum (FAD) of conodont Misikella posthernsteini. This means that the negative peak could be used as a geochemical marker for the Rhaetian. The negative trend of δ13Corg is mirrored by the 13C curve from carbonates (δ13Ccarb), indicating that the isotopic record in Pignola-Abriola is primary. Magnetostratigraphy The sequence of geomagnetic polarity reversals along the Pignola-Abriola section defined 10 magnetozones (5 normal and 5 reverse) that have been associated to the E13r-E20r polarity interval in the Newark Astrochronological Polarity Time Scale (Newark-APTS). The characteristic of the Newark-APTS is the calibration of the magnetostratigraphy with a time scale based on the astronomic cycles recognized in the stratigraphic sequence (covering the entire Late Triassic, from Carnian to Hettangian). The correlation between the Pignola-Abriola section and the Newark-APTS has been statistically evaluated using a Student's t-test, comparing the thickness of the magnetozones in Pignola-Abriola with the duration of the magnetozones in the Newark-APTS (as used before for the Carnian-Norian Pizzo Mondello section in Sicily). The basic assumption of this method is that in pelagic basinal sections the sedimentation rates are quite constant and thickness is a proxy of time. Several correlation options has been tested and only one resulted the most accurate. Following the age model derived to the correlation between the Pignola-Abriola section and the Newark-APTS, the stratigraphic level marking the Rhaetian base has been dated at 205.7 Million years ago. The potential of the Pignola-Abriola section as GSSP of the Rhaetian Stage The Pignola-Abriola section has been proposed as a candidate for the GSSP of the Rhaetian Stage, fulfilling the main requirements to be selected as a boundary stratotype. This section is in facts characterized by a detailed biostratigraphy (conodonts and radiolarians) with a clear taxonomy and markers for both Stages and Substages boundaries. The chemostratigrahic curves of δ13Corg and δ13Ccarb show