Cheiloceras subpartitum (Münster, 1839) sensu Becker, 1993 from the K. crepida Zone at Jabłonna in the Holy Cross Mountains.

Diagnoza

Discoidal, relatively thick conch with transverse thickenings well developed also on flanks.

Porównanie

The neotype of the species shows proportions of the conch and suture similar to the specimen from Jabłonna, without any pointing of the flank lobe. Perhaps Sobolew’s (1914) Oma-monomeroceras (Cheiloceras) disco-transversale from the Upper Łagów Beds represents the same lineage. O. (Ch.) tenue from the clymeniid limestone at Łagów Dule may be a surprisingly late member of the lineage.

Autekologia

Występowanie geograficzne

Jabłonna.

Zasięg czasowy

K. crepida Zone.

Materiały muzealne

ZPAL: 1 specimen.

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.