Dollymae? guizhouensis Wang et Wang, 1978 from the late Famennian at Dzikowiec (sample Dz-48); P₁ element ZPAL cXVI /1645.

Diagnoza

Undenticulated, tranversely widened basal cone in P₁ elements, additional denticulation ventrally of the cusp.

Porównanie

The incipient denticulation below the cusp makes this very rare latest Famennian species unlike other species of Pelekysgnathus. As noticed already by Over (1992), the lateral expansion of the base suggests that this may be the beginning of the lineage represented in the Tournaisian by Dollymae bouckaerti Groessens, 1977 and Eotaphrus bultyncki, subsequently diversified into elaborate Carboniferous forms.

Autekologia

Występowanie geograficzne

The D. trigonica Zone at Kowala and Dzikowiec.

Zasięg czasowy

Materiały muzealne

6 specimens ZPAL

Literatura

Dzik, J. 2006. The Famennian "Golden Age" of conodonts and ammonoids in the Polish part of the Variscan sea. Palaeontologia Polonica 63, 1-359.