Cylichnium
Cylichnium is a genus of very small sea snails, unassigned in a family in the order Cephalaspidea.
Species
Cylichnium africanum Cylichnium ancillarioides Cylichnium chinense Cylichnium cylindrellum Cylichnium domitum Cylichnium guineense Thiele, 1925 Cylichnium jucundum Thiele, 1925Cylichnium mucronatum Valdés, 2008Cylichnium nanum Valdés, 2008 Cylichnium oliviforme Cylichnium spatha Cylichnium waldae Bouchet, 1975;Species brought into synonymy:Cylichnium matsumotoi Habe, 1955: synonym of Cylichnium ancillarioides Cylichnium sumatrense Thiele, 1925: synonym of ''Cylichnium ancillarioides''