Diagnoza

Conch of generalized morphology and longiconic appearance at juvenile stages, developing ventrolateral furrows at diameter of 40-45 mm; delicate irregular growth lines.

Porównanie

The species shows much similarity to K. bisulcata (Münster, 1832), lacking its diagnostic lateral furrows at maturity and to K. ademmeri Korn et Price, 1987, but lacks any spiral ornament.

The holotype of K. kowalensis is a juvenile specimen, unidentifiable at the species level if taken alone. Probably the oldest true Kosmoclymenia in the Holy Cross Mountains occurs at Kowala in the grey limestone below the black Epinette Event shale. Along with several internal moulds collected by myself from there, two specimens with preserved shell showing growth lines were found and they fit the morphology of both the Czarnocki’s type specimens of K. kowalensis from Ostrówka and those from the red limestone classified by him in K. sedgwicki. However, the lectotype of Clymenia sedgwicki Münster, 1840 has appeared to represent the tornoceratid Pseudoclymenia.

Protoxyclymenia tenuissima Czarnocki, 1989 was based on a minute specimen considered mature by Czarnocki  because of apertural modification of one specimen from Kowala (possible preservational artefact).

Autekologia

Występowanie geograficzne

Kowala and Ostrówka and Dzikowiec.

Zasięg czasowy

P. jugosus and D. trigonica Zones.

Materiały muzealne

ZPAL: 17 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.