The mollusk type-material of Gaetano Rovereto in the “BTP Collection” (Museo di Paleontologia - DISTAV - Università di Genova): the Oligocene types from Mioglia area.

The present paper examines the types of the gastropod, cephalopod, and bivalve new taxa described by Gaetano Rovereto in the years 1897-1914 from the Oligocene rocks of Mioglia area (Molare Formation and Rocchetta-Monesiglio Formation, Tertiary Piedmont Basin, Southern Piedmont - Central Liguria, NW Italy). These taxa are part of the “Collezione BTP” (BTP Collection) housed at the Dipartimento di Scienze della Terra, dell’Ambiente e della Vita - DISTAV - of the Università di Genova. The Mioglia area collecting sites reported on in Rovereto’s papers have been verified on field. In the Mioglia area, Rovereto identified six new species of gastropods (preserved in the BTP Collection), one of cephalopods (preserved) and 17 new taxa of bivalves (16 preserved, one lost). This paper focuses on six gastropod, one cephalopod and 14 bivalve taxa originally described by Rovereto and presently included in the BTP Collection. As a result of this revision some taxa were confirmed, others were put into synonymy and others have undergone a change of genus attribution.