Trigonoclymenia glabra (Czarnocki, 1989) from the P. trachytera Zone at Ostrówka and Jabłonna in the Holy Cross Mountains.

Trigonoclymenia glabra; growth lines, suture, internal shell thickening and outline of the shell.

Diagnoza

Periodic blade-like expansion of the aperture.

Porównanie

Czarnocki classified this species in Platyclymenia but the septal morphology makes it close rather to Clymenia. An apparent tendency towards developing parabolic nodes points out its probable affinity to Trigonoclymenia spinosa.

Autekologia

Występowanie geograficzne

Ostrówka.

Zasięg czasowy

Probably the early P. trachytera.

Materiały muzealne

ZPAL: 2 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.