Panderodus sulcatus (Fahraeus, 1966) ftom the Mójcza Limestone.

Diagnoza

Relatively robust elements, generalized in shape, the ne element s gently curved, wide; a symmetrical element present.

Porównanie

The general apparatus composition has been known since LOFGREN'S ( 1978) description. The anterior, ne, element departs morphologically from the remaining three types that can be easily distinguished from one another owing to the presence or absence of one or two ribs bordering their external sides. The surface of the elements is almost smooth. The symmetrical element has two furrows but sometimes one of them is less complete, which makes the element not quite symmetrical.
Undoubtedly symmetrical elements have been found only in older populations of the species (sample MA-52). Higher up they seem to be missing (sample MA-66).

Autekologia

Występowanie geograficzne

Occurs in Mójcza from 0.4 m above the discontinuity (E. rohustus Sub zone,
Llanvirn ) at least up to 0.5 m above the bentonite (A . tvaerensis Zone, Early Caradoc) and there seems to be an evolutionary continuity to Panderodus sp. A. Similarly distributed in Miedzygorz. The species is known also from the Llanvirn of the Baltic region .

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.