Rodzaj Ostrovkites Dzik, 2006
Gatunek typowy Opis Diagnosis. — Suture with pointed flank lobe and small secondary ventral lobes; discoidal conch with a tendency to develop longitudinal (spiral) striation. Remarks. — Suture of the type species is similar to that of the praeglyphioceratid Lagowites nivae (Sobolew, 1914) but the auricles of the conch aperture are a tornoceratid feature. The stratigraphic position suggests that the subventral lobation of the suture originated independently of that in advanced Maeneceras species. Synonimy Zasięg czasowy 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. |
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