Diagnoza

Thin pachyconic juvenile conch becoming thick disk shaped; umbilicus moderately wide; its edge initially rounded; ornamentation with 30 short, very weak ribs on the umbilical edge and fine biconvex growth lines with deep external sinus.

Porównanie

Similar to Gastrioceras angustum and G. carbonarium but the conch narrower with a narrow umbilicus differs in the disappearance of the umbilical ribs at a much earlier ontogenetic stage; conch of G. adleri (Patteisky, 1965) has very strong, rib-like growth lines.

Autekologia

Występowanie geograficzne

Great Britain (Yorkshire, Wales), Belgium (Liège), Netherlands, Germany (Rhenish Slate Mts.) and Poland (Upper Silesia, Lublin Coal Basin).

Zasięg czasowy

Carboniferous, Moscovian

Materiały muzealne

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.

Frech, F. 1897–1902. Lethaea geognostica oder Beschreibung und Abbildung der für die Gebirgs-Formationen bezeichnendsten Versteinerungen. I. Theil. Lethaea palaeozoica. 2. Band. IV. Stuttgart.

Korn, D.  2007. Goniatiten von der Namur/Westfal-Grenze im Rheinischen Schiefergebirge (Cephalopoda, Ammonoidea; Oberkarbon). Deutschland.  Geologie und Paläontologie in Westfalen 69: 5-45.