Diagnoza

Incipient platform of irregularly angular shape ornamented with a few large tubercles, basal cavity forms wide lobes on both sides of the P₁ element.

Porównanie

This seems to be the oldest member of the D. trigonica lineage, perhaps a successor of D. stabilis, although the transition has not been demonstrated. The basal cone ornamented with tubercles makes the species similar to Protognathodus. This is probably only a convergence; the difference is that the basal cavity is expanded only in proximity to the cusp and strongly narrows dorsally.

Autekologia

Występowanie geograficzne

Kowala.

Zasięg czasowy

Early P. jugosus Zone. 

Materiały muzealne

ZPAL: 27 specimens.

Literatura

Dzik, J. 2006. The Famennian "Golden Age" of conodonts and ammonoids in the Polish part of the Variscan sea. Palaeontologia Polonica 63, 1-359.