Polygnathus kadzielniae Dzik, 2006 from the K. crepida Zone at Kadzielnia and Jabłonna in the Holy Cross Mountains.

Apparatus composition of Polygnathus kadzielniae.

Diagnoza

Margins of the main part of the platform in mature elements parallel, the ventral part of the platform occlusal surface gently concave, ornamented with weak transverse ribs and tubercles.

Porównanie

This is a late member of the P. volhynicus lineage, different in having the platform more widely expanded and in a more delicate and regular denticulation of P₂ elements. Identification of a so generalized Polygnathus species is a difficult task because of its great population variability and few diagnostic characters. Perhaps there is already a name for the species available in the literature, but I have not been able to identify it with confidence.

Autekologia

Występowanie geograficzne

Kadzielnia and Jabłonna.

Zasięg czasowy

Mid K. crepida Zone. 

Materiały muzealne

ZPAL: 1,458 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.