Siphonodella sp. cf. S. isosticha (Cooper, 1939) from the Wapnica beds of Dzikowiec.

Diagnoza

The second posterior rostral ridge which runs paralel to the margin (unlike the first one that is directed almost transversely to the platform margin), usually forming only a ramp in the dorsal part of the element.

Porównanie

Elements P₁ are highly variable, but almost all mature specimens show characteristic features that make them different from the populations above and below in the section.

Autekologia

Występowanie geograficzne

the Sudetes and probably Holy Cross Mts

Zasięg czasowy

early 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.