Gatunek typowy
Planulites striatus Münster, 1832 from Schübelhammer near Heinersreuth in Frankenwald.

Opis

Diagnosis. — Aturia-like flank lobe with sinous dorsal slope in the middle of conch flanks; relatively involute conch. 

Remarks. — The type species of Genuclymenia, G. frechi from Enkeberg in the Rhenish Slate Mountains is almost exactly transitional in the conch form, its ornamentation, and suture between G. humboldti and this species. Its stratigraphic position also fits the chronomorphocline. The early part of the lineage of  Cymaclymenia seems thus relatively well documented.
The course and prominence of growth increments and the shape of the flank lobe of the suture are considered to be the most important diagnostic character of species within this genus. However both these traits show significant variation even within the same specimen. It is difficult to match the Holy Cross Mountains material with the topotype German specimens of earlier introduced species. either they tend to be endemic or this is due to differences between local populations representing the same species. Their actual number may thus appear smaller than now estimated.

Synonimy

Zasięg czasowy

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.