Diagnoza

P₁ elements with transversely ribbed anterior lobe.

Porównanie

There is a gap in occurrence between P. trachytera and P. rugosa in the Holy Cross Mountains but the laterally sinuous shape of P₂ elements suggests a close relationship between these species. In some specimens of late P. trachytera the anterior ridge splits into a row of tubercles. There would not be much to change this into the tuberculated anterior field of P. rugosa, but the change remains to be domonstrated.

Autekologia

Występowanie geograficzne

Ostrówka, Miedzianka, Kowala, and Jabłonna.

Zasięg czasowy

P. styriacus and P. jugosus Zones.  

Materiały muzealne

ZPAL: 664 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.