Analisi biostratigrafica a conodonti della sezione di Sant'Otiero, Monti delle Madonie, Sicilia.

This work consists in a conodont-biostratigraphic analysis of the Sant’Otiero section located in the Petralia Sottana Valley, on the eastern side of Mount San Salvatore, in the north-central part of Sicily. The studied section crops out in a peak, named Pizzo di Sant’Otiero, consisting in calcareous megabreccias on its lower part overlaid by pelagic calcilutites (calcari di Sant’Otiero). The upper portion of this section has been investigated with a conodont biostratigraphy in order to date the pelagic sediments. The identification of some conodont species, in particular Budurovignathus hungaricus along with Paragondolella trammeri in the lower part of the section and B. mungoensis in the upper, allowed to constrain the calcari di Sant’Otiero close to the boundary between Fassanian (lower Ladinian) and Longobardian (upper Ladinian) substages, Ladinian in age.