Gatunek typowy

Opis

Diagnosis. — Periodic expansions of the shell aperture produced funnel-like blades or ventrolateral parabolic nodes; septum with minute lateral vaulting; conch evolute.
Remarks. — The type species shows a simple septum and morphology closely similar to that in the species of Platyclymenia. Its affinities to Clymenia are suggested by the septal morphology and ornamentation of T. glabra (Czarnocki, 1989), that is, morphologically transitional rather between Aktuboclymenia and Clymenia. The simple suture of advanced Trigonoclymenia may thus be an effect of simplification parallel to that at the origin of the Platyclymenia lineage, which may be otherwise closely related. Spinoclymenia aculeata Bogoslovsky, 1962, with its ventrolateral spines (Bogoslovsky 1962) may also represent this clade.

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.