Cheiloceras  pompeckji (Wedekind, 1908) from the K. crepida Zone at Jabłonna and Kadzielnia in the Holy Cross Mountains.

Cheiloceras  pompeckji; growth lines, internal thickening, sutures and outline of the shell.

Diagnoza

Transverse internal thickenings of the conch virtually parallel to aperture, may be somewhat more acute ventrally, suture with a minute blunt indentation in the flank lobe with almost straight ventral slope.

Porównanie

The specimens from Kadzielnia are similar to those of Nehdenites verneuilli from the same locality (but probably not the same stratum) having a somewhat more globose appearance and indented flank lobe of the suture. The lectotype of the species  is of a more discoidal appearance. The topotype specimen considered  to be within the range of variability fits the morphology of juvenile specimens from Jabłonna better than the lectotype. Oma-monomeroceras (Cheiloceras) verneuili, O. (Ch.) avaricatum, and O. (Ch.) avaricatum from the Lower Łagów Beds may also belong to this species.

Autekologia

Występowanie geograficzne

Kadzielnia and Jabłonna, possibly also Łagów-Dule.

Zasięg czasowy

K. crepida Zone.

Materiały muzealne

ZPAL: 23 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.