title: Stratigraphically significant, sporadic Early Cretaceous ammonites in Butkov Quarry (Central Western Carpathians, Slovakia)
abstract: Butkov Quarry provides the best exposed stratigraphic sequence of marly limestones with Early Cretaceous ammonites in the Manín Nappe of the Central Western Carpathians. The presented paper deals with the sporadically occurring zonal ammonites, or ammonites of guiding character, from the Lower Valanginian to Upper Hauterivian. Sixteen species are taxonomically elaborated here in detail. More attention is given to the basic taxonomy of the Subfamily Crioceratitinae Gill, 1871. The species describ
journal: Acta Geologica Polonica