Polylophodonta ovata (Helms, 1961) from the early K. crepida Zone at Wietrznia and the K. triangularis Zone at Jabłonna  in the Holy Cross Mountains.

Apparatus composition of Polylophodonta ovata.

Diagnoza

Row of denticles of the blade of recognizable to the dorsal end of the platform in P₁ elements even in mature specimens.

Porównanie

The oldest occurrence of the species is in bed 4 at Jabłonna, where it occurs together with Klapperilepis crepida prior to the entrance of Conditolepis tenuipunctata. Elements from there are of a rather robust and irregular appearance. The typical form occurs in the somewhat younger samples J-45a and Wtr-32.

Autekologia

Występowanie geograficzne

Jabłonna, Wietrznia, and Miedzianka. The species occurs also in the Dębnik area, identified there as P. confluens.

Zasięg czasowy

Late K. triangularis and early K. crepida Zone. 

Materiały muzealne

ZPAL: 289 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.