Gatunek typowy
Drepanodus arcuatus PANDER 1856

Opis

Diagnosis. - Apparatus composed of large, robust (sometimes hyaline) elements di stinctly separated into two symmetry transition 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.
Remarks. - Apparatus reconstruction proposed by DZIK (1990), supported by the cluster described by MCCRACKEN ( 1989) ; it testifies that the element types identified here as representing the "platform" series (sp-oz) really occupied a margin al position in the apparatus.

Synonimy

Zasięg czasowy

Literatura

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.