Ramusculus [SEP] parent taxon
Ramusculus
Ramusculus is a monotypic genus of air-breathing land snails, terrestrial gastropod mollusks in the family Enidae. The sole species lives in the Crimean Peninsula. 
The only species belonging to "Ramusculus" is "Bulimus subulata" (). "Zebrina" ("Ramusculus") "mienisi" Gittenberger 1986 living in Erzurum Province (northeast Turkey) was also assigned to "Ramusculus", but was subsequently placed in a separate genus, "Ayna" Páll-Gergely, 2009.
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coiled), others dextral (right-coiled) shells. The sinistral and dextral specimens form "clear" populations but can by found sympatrically as well. The sinistral specimens were described as a species ("Ramusculus laevitortus" Schütt, 1995) differs from the dextral "Ramusculus mienisi". The species inhabits a relatively small area in Erzurum Province, northeastern Turkey.