Guizhoudella dinodontoides sp. n. from the L. styriacus Zone at Miedzianka ( sample MD-14), Jabłonna (sample J-45a, bed 12) and Kowala (sample Ko-18, Ko-154) in the Holy Cross Mountains; specimens ZPAL cXVI/1801, 1802, 1813-1815, 1333, 1799, 1809-1811, 1862, 1909, 1901, 1861ans 1892

Diagnoza

Relatively small basal cone and wide, flat denticles; processes of ramiform elements with a low platform forming a ribbon-like structure along their basal parts.

Porównanie

Similar to the type species, the new species is also long ranging and extremely variable, but species distinction is rather certain. Only juveniles lacking characteristic denticulation and ribbon-like platform may be misidentified. Much less certain is identification and homology of particular element types. Two elements from Miedzianka may represent the platform series  if they truly belong to the species (they lack the tuberculation occurring in undoubted specimens). Alternatively, the platform series is represented by elements with relatively straight processes but otherwise similar to other element types. The elements S₀ and S₁ may or may not have the medial process, but it seems to be always rather short in length, unlike the probably homeomorphic Carboniferous Dinodus.

Autekologia

Występowanie geograficzne

Rare from the beginning of the Famennian at Kowala through the K. crepida Zone at Jabłonna, Kadzielnia and Kowala to the L. styriacus Zone at Miedzianka. 

Zasięg czasowy

Materiały muzealne

ZPAL: 12 specimens.

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.