Gatunek typowy
Drepanodus arcuatus Pander, 1856

Opis

Apparatus composed of large, robust (sometimes hyaline) elements distinctly separated into two series. The first one consists of two element types with gaping basal cavities and short cusps, the second is a series of up to five element types with long flattened cusps and with changing curvature of the bending at the base of the cusp. The symmetrical element, which is the end member of the symmetry transition series, has a straight basal margin.
Apparatus reconstruction proposed by Dzik (1990) is supported by the cluster described by McCracken (1989); it testifies that the element types identified as representing the P series really occupied a marginal position in the apparatus.

Synonimy

Zasięg czasowy

Literatura

Dzik, J. 1994. 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.