Diagnoza

Subsphaerocone shell with wide, evenly-rounded venter and whorl depressed dorso-ventrally, being about three-fifths as high as it is wide; umbilicus deep and about a one-third of shell-diameter; there are three to four growth lines by 1 mm on the venter of the septate portion of the mature shell but on the shell of the body chamber they are often finer, closer and not so regularly spaced; growth-lines are radial or directed slightly forward in a low curve across the umbilical flank; they are then deflected backwards across the sides of the shell; broad V-shaped first lateral lobe tends to be acuminate and is followed by a lower, rounded, second lateral saddle and this crosses the umbilical flank and shoulder and joins with a shallow V-shaped lobe centring on the umbilical wall.

Porównanie

Autekologia

Występowanie geograficzne

Belgium (Hainaut, Liège, Namur), Great Britain (Yorkshire), Germany (Rhenish Slate Mts.), Poland (Lublin Coal Basin) and (West) Serbia

Zasięg czasowy

Carboniferous; Serpukhovian (Cravenoceras malhamense –bisulcatum Zones)

Materiały muzealne

Literatura

Bisat, W.S. 1932. On some lower Sabdenian goniatites. Transactions of the Leeds Geological Association 5: 27-36.

Żelichowski, A.M. 1972. Występowanie goniatytów w osadach karbonu na obszarze hrubieszowsko-tomaszowskim (SE Polska). Geological Quarterly 16 (3): 587-596.