Glatziella minervae (Renz, 1914) probably from the early D. trigonica Zone at Dzikowiec in Sudetes and Karczówka in the Holy Cross Mountains.

Diagnoza

Moderately involute conch; wide whorls with distinct ribbing on flanks.

Porównanie

Particular specimens differ from each other mostly in having more or less apparent ribbing on flanks and in the width of the umbilicus. Schindewolf  introduced G. diensti and G. tricincta from the same locality, the species transitional in the conch geometry between G. helenae and G. minervae. It remains to be documented with more material whether these are stages in the evolutionary development of the lineage, end-members of population variability, or truly separate species.

Autekologia

Występowanie geograficzne

Dzikowiec.

Zasięg czasowy

The early D. trigonica Zone. 

Materiały muzealne

ZPAL: 3 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.