Diagnoza

In the Ostr6wka samples the platform shapes of sp elements of Weyerognathz.sl how a quite extensive variability, ranging from strongly asymmetrical, narrowly triangular to almost symmetrical and wide. lt remains unknown whether this is a real variability or rather a time averaging effect as a result of reworking of older Tournaisian specimens.

The type population of this species comes from the sample taken 7.5 m below the top of the limestone series at the old quarry in Osthang Burg near Referinghausenin the Rhenish Slate Mountains.I t is associated there with Scaliognathusa nch.oralisa nd is thus of the same age as the Ostrówka samples.

Porównanie

Despite its late geological age, P₁ elements show the basal cavity of size ranges comparable to the much older W. inaequalis.  The platform is also not as wide as in W. triangulus but rather triangular, with a tendency in adult specimens to develop an extension at one corner. In this respect this population seems to show, in an incipient form, the features diagnostic of the late Tournaisian W. pinnatus and most probably represents its lineage that immigrated to the area at the beginning of the post-Gattendorfia sea deepening.

Autekologia

Występowanie geograficzne

Dzikowiec in the Sudetes

Zasięg czasowy

Tournaisian

Materiały muzealne

ZPAL

Literatura

Dzik, J. 1997. Emergence and succession of Carboniferous conodont and ammonoid communities in the Polish part of the Variscan sea. Acta Palaeontologica Polonica 42, 57-170.

Dzik, J. 1997. Emergence and succession of Carboniferous conodont and ammonoid communities in the Polish part of the Variscan sea. Acta Palaeontologica Polonica 42, 57-170.