Oslodus semisymmetricus (Hamar, 1966) from the Mójcza Limestone.

Apparatus of Paltodus? semisymmetricus (Hamar, 1966).

Diagnoza

Porównanie

The M element with long cusp and elements of the symmetry transistion series with two sharp ridges at their sides and internally expanding bases The morphology of elements of the species is closely similar to that of Besselodus arcticus Aldridge, 1982 and it is a matter of dispute whether this is an effect of a secondary development of geniculation of the M elements in the Dapsilodus lineage or a development of peculiar oblique striation in elements of the symmetry transition series of Paltodus, making them identical with respective elements of Dapsilodus.

Autekologia

Występowanie geograficzne

Mójcza, Holy Cross Mts.; Baltic region, South China.

Zasięg czasowy

Rare in the Mójcza Limestone from 0.4 above up to 1.4 m above the discontinuity E. robustus - E. lindstroemi Subzones).

Materiały muzealne

ZPAL

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. 

Zhang, J. 1998. Conodonts from the Guniutan Formation (Llanvirnian) in Hubei and Hunan Provinces, south-central China. Stockholm Contributions in Geology 46, 1-161.