Kosmoclymenia galeata (Wedekind, 1914) from the late P. jugosus Zones at Dzikowiec in the Sudetes.

Kosmoclymenia galeata; suture and outline of the shell.

Diagnoza

Conch of generalized morphology developing ventrolateral furrows at diameter of about 70 mm, ornamented with regularly and densely distributed distinct growth lines.

Porównanie

The lectotype has poorly preserved growth lines and shows a rather early development of ventrolateral furrows, indicating conch maturity but its evolute appearance suggests affinities to the topotype specimens included here in the same species. K. sp. aff. K. bisulcata shares a similar ornamentation and occurs at the same locality but not necessarily in the same stratum. K. galeata is distinct from it in ontogenetically later development of the ventrolateral furrows, but a somewhat higher growth expansion rate at earlier stages. The apertural lappets of the type specimen of K. parundulata Korn et Price, 1987 from Effenberg project forward, unlike the discussed specimens from Dzikowiec.

Autekologia

Występowanie geograficzne

Dzikowiec.

Zasięg czasowy

Probably the late P. jugosus Zone.

Materiały muzealne

ZPAL: 2 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.