Opis

Elements showing prominent size gradient in the apparatus, with the anteriormost
elements ne being the largest, of knife-like appearance, the following hi elements are smooth and laterally twisted, while the remaining elements, with more or less prominent longitudinal ribs, form a separate symmetry transition series .

Genera included.- Scalpellodus DZIK, 1976, Walliserodus SERPAGLI, 1967, Belodella ETHlNGTON,1959, Drepanodistacodus MOSKALENKO, 1977, Dvorakia KLAPPER et BARRICK, 1983.

Remark.- In the Late Devonian species, S0 (tr) elements shape is the most diagnostic, with their external surface flat, very strongly concave or raised. The Frasnian species differ from each other also in orientation of denticles.

Synonimy

Zasięg czasowy

Literatura

Dzik, J. 2002. Emergence and collapse of the Frasnian conodont and ammonoid communities in the Holy Cross Mountains, Poland. Acta Palaeontologica Polonica 47 (4): 565-650

Dzik, J. 1994a Conodonts of the Mójcza Limestone. In: J. Dzik, E. Olempska, & A. Pisera. Ordovician carbonate platform of the Holy Cross Mountains. Palaeontologia Polonica 53, 43-128.