(Original description) The shell is discoid, flattened on both sides but slightly sunken in the center, with a pearly semi-transparent white or very pale wax-like color. Both the upper and lower surfaces are adorned with numerous abruptly projecting rounded ribs. These ribs widen as they radiate from the well-defined sutural line but do not fully extend to the edges of the whorls. The spaces between the ribs are nearly equal in width and may either be smooth or feature a single elevated radiating line. Occasionally, a faint spiral groove appears between the ribs near their termini but does not traverse them.
The shell consists of only 2½ whorls, which are convex, well-defined, and gradually increase in size from a smooth, relatively large apex. The body whorl is not perfectly rounded but appears slightly subangulated above and below, possibly due to the reduced convexity of the periphery.
The aperture, raised slightly above the upper surface of the shell, is small and nearly circular, with only a minor intrusion from the preceding whorl. The animal, dried and not observed in its living state, is wax-colored. [2]
Distribution
This species occurs in the Atlantic Ocean; also off the coastal regions of West Africa; in the Mediterranean Sea.
^Forbes, E.; Hanley, S.C.T. (1848–1853). A history of British Mollusca and their shells (vol. 3 ed.). London: van Voorst. pp. 160–161. Retrieved 21 January 2025.{{cite book}}: CS1 maint: multiple names: authors list (link) This article incorporates text from this source, which is in the public domain.
Backeljau, T., De Meyer, M., Janssens, L., Proesmans, R., & Vader, W.J.M. (1984). "Ammonicerarota in Norway (Mollusca, Gastropoda: Omalogyridae)". FaunaNorvegica. 5: 6–8.{{cite journal}}: CS1 maint: multiple names: authors list (link)
Lozouet P. & Maestrati P. (1982). "New species of molluscs from the Oligocène (Stampien) for the bass of Paris and Aquitaine". Archive for Moluskenkunde. 112 (1–6): 176.
