Diagnoza

Umbilicus covering about one third of the conch diameter.

Porównanie

The species is close to P. costata but seems to represent the next stage of its evolution towards more and more involute conchs. Gyroclymenia mutabilis Czarnocki, 1989 and G. rotundata Czarnocki, 1989 seem to represent the same species, and the type of G. sophiae apparently is mature.

Autekologia

Występowanie geograficzne

Ostrówka, reworked to Quaternary sediments at Sieklucki’s brickpit in Kielce, Holy Cross Mountains.

Zasięg czasowy

Early L. styriacus Zone, lower Clymenia beds (Nodosoclymenia bed),

Materiały muzealne

ZPAL: 1 specimen.

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.