Diagnoza

Subglobose with a large umbilicus; ornamentation consisting of very fine transverse streaks, very tight, not bifurcated, almost straight, slightly convex forwards on the sides and forming a slight hyponomic sinus; smooth internal mould.

Porównanie

Differs from species of Emstites in evolute juvenile stages with wide whorls; adult conchs are discoidal in shape, with relatively narrow umbilicus.

Autekologia

Występowanie geograficzne

Great Britain, Ireland, Belgium (Namur), Germany (Rhenish Slate Mts.), Poland (Lublin Area, Upper Silesia), Algeria, China, Kazakhstan (Beleuty River), USA (Oklahoma, Texas)

Zasięg czasowy

Carboniferous, Serpukhovian (lowest E1 alpha - Pendleian—Arnsbergian)

Materiały muzealne

Literatura

Bisat, W.S. 1924. The Carboniferous goniatites of the North of England and their zones. Proceedings of the Yorkshire Geological Society 20: 40-124.

Bojkowski, K. 1967. Podział stratygraficzny karbonu prodyktywnego w Zagłębiu Górnośląskim na podstawie fauny. Annales Societatis Geologorum Poloniae 37(1): 65-99.

Fedorowski, J. 2015. Serpukhovian (Early Carboniferous) Rugosa (Anthozoa) from the Lublin Basin, eastern Poland. Annales Societatis Geologorum Poloniae 85: 221–270.

Korejwo, K. 1969. Stratigraphy and palaeogeography of the Namurian in the Polish Lowland. Acta Geologica Polonica 19 (4): 609-709.