Diagnoza

The horizon, from which the characteristically compressed specimen with distinct constrictions described by Weyer (1965) came, may be the same as that of G. costata; in Oberrrodinghausen both species co-occur.

Porównanie

Autekologia

Występowanie geograficzne

Zasięg czasowy

Materiały muzealne

Literatura

Dzik, J. 1997. Emergence and succession of Carboniferous conodont and ammonoid communities in the Polish part of the Variscan sea. Acta Palaeontologica Polonica 42, 57-170.