Micrograzer in the infralittoral… « Like many micro-molluscs it is considered herbivorous, whereas in reality it is an unrepentant grazer of organic film: in the zone where light penetrates, this organic film is dominated by diatoms, and therefore, finally it’s still an herbivorous! » S. Clanzig, p.c. Often associated with the brown algae Cystoseira compressa and Cystoseira amentacea (Chiarore & al., 2017).
 
« I found this small and interesting shell in the sand of the Ognina near Catania. It differs from the related species already known by all the characters which I have just indicated, and principally by its three small transverse bands. This species undoubtedly belongs to the genus Homalogyra recently created by M. Jeffreys: I have placed it there in accordance with the opinion of Dr. Fischer, to whom I dedicate it. » – T. A. di Monterosato: “Description d’espèces nouvelles de la Méditerranée”, Journal de conchyliologie vol. XVII, Paris 1869, p.275.

« The shells of Ammonicera, as well as of Omalogyra, resemble minute ammonites in that each side is a mirror image of the other. The ammonite shape reflects how the shell is carried; namely, with the aperture directed forward, rather than being carried (as in most gastropods) with the under surface resting on the foot. Thus, the entire animal appears to be bilaterally symmetrical when crawling (Moore, 1971). » – R. L. Squires: “New species of small to minute gastropods of Early Eocene age from the Crescent Formation, Black Hills, southwest Washington”, The veliger vol. 39, Berkeley 1996, p.237.