Origen y diversificación de los rotaloideos (Foraminíferos) durante el Cretácico superior: Implicaciones paleobiogeográficas

New rotaloideans foraminifera from Central and Southern Appenines (Central Tethys) allowed us to confirm during the Late Cretaceous the existence of two neighbouring palaeobioprovices: Tethyan and Pyrenean characterized by different genus and/or species.