Diagnoza

Shell pachyconic; umbilicus very narrow; ornament of crenulated biconvex and rectiradiate growth lines with distinct dorsolateral projection; dorsolateral and ventrolateral projection with the same height; external sinus moderately deep; suture line with moderately narrow external lobe and moderately high median saddle.

Porównanie

G. crenistria has a similar shell but growth lines are much more curved and with dominant ventrolateral projection.

Autekologia

Występowanie geograficzne

Portugal, Great Britain (Derbyshire, Isle of Man and Yorkshire), Germany (Rhenish Slate Mts.), Czechia (North Moravia), Poland (Lublin Coal Basin) and Morocco (Tafilalt) 

Zasięg czasowy

Carboniferous; Visean

Materiały muzealne

Literatura

Bisat, W.S. 1934. The goniatites of the Beyrichoceras zone in the north of England. Proceedings of the Yorkshire Geological Society 22: 280-309.

Korn, D. 1988d. Die Goniatiten des Kulmplattenkalkes (Cephalopoda, Ammonoidea; Unterkarbon; Rheinisches Schiefergebirge). Geologie und Paläontologie in Westfalen 11: 1-293.

Korn, D. & Tilsley, J.W. 2006. Ammonoid assemblages from the Asbian B2b (Early Carboniferous: Mississippian) buildups of the Peak District, England. Proceedings of the Yorkshire Geological Society 56 (2): 111-150.

Żakowa, H. 1992. Goniatites from the Upper Visean (Kielce Syncline, the Holy Cross Mts, Poland). Geological Quarterly 36 (3): 327-344.