Nuevo registro de gasterópodos en la Formación Yacoraite (Maastrichtiano-Daniano) Cordillera Oriental de Jujuy, Argentina: sistemática, bioestratigrafía y correlación geológica

we present a new record of gastropods recovered in limestones of the yacoraite formation (maastrichtian-danian) in jueya environs, cordillera oriental of jujuy, argentina. has been identified 91 fossils, distributed in the genera: brachycerithium bonarelli 1921; bonarelliella n. gen. and percossmannella n. gen. has been defined the species brachycerithium evolutum bonarelli 1921; brachycerithium minus bonarelli 1921; brachycerithium ferugloi? bonarelli 1921; bonarelliella jueyai sp. nov; bonarelliella ameghinorum bonarelli 1927 (cónsole gonella nov. comb.); bonarelliella brackebuschii sp. nov; bonarelliella multicosta bonarelli 1927 (cónsole gonella nov. comb.) and percossmannella steinmannii sp. nov. as result of the research, the affinities and bioestratigraphic range of this fauna are still open to highest levels.