Diagnoza

Small evolute conch with gently concave flank lobe of the mature, and Clymenia-like juvenile, suture.

Porównanie

The specimens from Jabłonna are of generally poor preservation and only the juvenile whorls, with a subcircular cross section, show sutures. They exhibit the suture angulation and minute marginal vaulting of the septum virtually undistiguishable from that in Clymenia laevigata. Mature whorls of the Jabłonna specimens are closely similar to those of the Łagów specimens. Probably this is a case of recapitulation of the ancestral features in the ontogeny, pointing to Aktuboclymenia as another close relative.

Autekologia

Występowanie geograficzne

Jabłonna and Łagów Dule.

Zasięg czasowy

P. trachytera Zone and black clymeniid limestone.

Materiały muzealne

ZPAL: 14 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.