Opis

Diagnosis. — Simple septum in mature conchs lacking any vaulted areas; generalized conch morphology ranging from moderately involute to moderately evolute.

Remarks. — The only difference between Cyrtoclymenia and Platyclymenia is a more evolute conch of the latter. There is a complete gradation between these conch geometries and the conch evoluteness is hardly a character deserving distinction at the family rank. The family Platyclymeniidae Wedekind, 1914 is therefore not used here. It may be also a matter of dispute whether acute venter is enough to define the family Rectoclymeniidae Schindewolf, 1923.

Synonimy

Zasięg czasowy

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.