Rodzaj Siphonodella Branson & Mehl, 1944
Gatunek typowy Opis Ridges parallel to the carina in P1 elements. P2 elements with high regularly denticulated carina and wide conical base. S and M elements minute of generalised morphology. The oldest occurrence of P2 elements diagnostic for Siphonodella corresponds to the transition from P. sulcatus to S. duplicata. A very small adult size of the non-platform elements in the Siphonodella aparatuses differentiate it from Pinacognathus. The Dinodus symmetry transition series set of elements shows no correlation with Siphonodella P1 elements in its stratigraphic distribution and probably are associated with P1 elements of 'Siphonodella' lobata. Synonimy Zasięg czasowy Tournaisian 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. |
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