Cymaclymenia Dzik, 2006 from the early P. jugosus Zone at Kowala in the Holy Cross Mountains.

Diagnoza

Porównanie

The most specific aspect of the Cymaclymenia specimens from the upper part of the Clymenia Stufe grey limestone and the basal part of the reddish limestone at Kowala is a rounded conch venter and prominent acute auricles in aperture. A similar growth lines and suture characterize the much younger geologically C. warsteinensis Korn, 1979, but its conch is more evolute. In fact, most specimens are internal moulds offering no data on the course of growth lines and only rarely well preserved suture can be traced. It seems that specimens from the lower part of the range of this form have a little tabulate venter, which is the primitive feature in the lineage

Autekologia

Występowanie geograficzne

Zasięg czasowy

Most specimens from the lower part of the range were collected from the scree and they probably come from the fossiliferous strata with Clymenia about 2 m below the black shale horizon, that is the late L. styriacus and early P. jugosus Zones. A few specimens can be rather safely determined as coming from near the black shale; a large sample of rather poorly preserved specimens have been derived from the nodular bed of sample Ko-116.

Materiały muzealne

ZPAL: 16 specimens from near the Epinette Event black shale and 45 specimens from around sample Ko-116.

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.