Diagnoza

Suture with relatively deep and angulate flank lobe; compressed whorls with tabulate venter.

Porównanie

Eocosmoclymenia Czarnocki, 1989 (with Clymenia dunkeri Münster, 1839 as the type species), in which C. primaeva was originally included, is transitional between Aktuboclymenia and Protoxyclymenia and apparently represents a stage in the continuous lineage. One may doubt if so detailed subdivision is necessary.

From the same stratum the types of  Eocosmoclymenia subacuta Czarnocki,1989 originated, defined as developing ventrolateral furrows in mature stages, and E. transitoria, with slighly more acute venter. Their status seems questionable. 

Autekologia

Występowanie geograficzne

Jabłonna and Ostrówka. 

Zasięg czasowy

Probably the P. trachytera Zone.

Materiały muzealne

ZPAL: 3 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.