P₁ elements of Gnathodus bilineatus (Roundy, 1926) from the late Visean of Czerna and Todowa Grząba.

Diagnoza

Porównanie

The apparatus of the species is well known. The material from Polish localities is not numerous enough to allow separation of non-platform elements from associated more numerous species. The P₁ elements from Czerna show more regular arrangement of tubercles, that form clear concentric rows. This may be connected with the older geological age of the Czerna assemblage.

Autekologia

Występowanie geograficzne

Zasięg czasowy

Materiały muzealne

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.