Diagnoza

Very strongly ribbed from the smallest diameters seen; at 18 mm diameter there are about fourteen ribs in half a whorl; occasionally a rib forks;, ribs pass strongly and radially (with a forward trend) over the flank for about half to two-thirds of the distance between the umbilical edge and the shoulder groove; they then begin to curve forwards, and thereafter lose their strength and merge into growth lines which pass forwards into an extremely deep and very pronounced lingua in the growth-lines over the strong ridge at the shoulder; there is a shallow concavity between the curve of the flank and the strong ridge which marks the junction of the curved flank and the venter; the venter is usually embedded but the ridge at the edge of the flank apparently passes straight down into, and is the edge of, the flattened venter.

Porównanie

From ancestral Edmooroceras differs in tabulate venter at late juvenile stages and from other species of Eumorphoceras in very long lappets and strong, sparse robbing of the flanks.

Autekologia

Występowanie geograficzne

Ireland, Poland (Lublin area)

Zasięg czasowy

Carboniferous, E2b2- E2c1 

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.

Musiał, Ł. & Tabor, M. 1988. Stratygrafia karbonu na podstawie makrofauny. In Z. Dembowski & J. Porzycki (eds.), Karbon Lubelskiego Zagłębia Węglowego. Prace Instytutu Geologicznego 122: 88-111.

Yates, P. J. 1962. The Palaentology of the Namurian Rock of Slieve Anierin, Co. Leitrim, Eire. Palaentology 5 (3): 355-443.