Polonodus sp. from the Mójcza Limestone

Diagnoza

Porównanie

The few fragmentary platform elements from the Mójcza Limestone do not enable reconstruction of the actual shape of adult elements. Judging from known specimens of the genus from Estonia and erratic boulders of Baltic origin they are extremely variable in respect to the ornamentation of the crown. On the other hand the pattern of ontogenetic transformations, expressed mainly in the branching of lobes, seems to be relatively stable and uniform in all known  morphotypes.

Therefore validity of species introduced by STOUGE ( 1984) requires additional biometrical support.

Autekologia

Występowanie geograficzne

Rare in basal parts of the Mójcza Limestone from 0.8 to 0.2 m below the
discontinuity surface (Microzarkodina ozarkodella Subzone of the Kundan: latest Arenig).

Zasięg czasowy

Materiały muzealne

Literatura

Dzik, J. 1994a Conodonts of the Mójcza Limestone. In: J. Dzik, E. Olempska, & A. Pisera. Ordovician carbonate platform of the Holy Cross Mountains. Palaeontologia Polonica 53, 43-128.