Glabella tyermaniGlabella tyermani is a species of sea snail, a marine gastropod mollusk in the family Marginellidae, the margin snails.DescriptionThe shell size varies between 4.5 mm and 16 mm.DistributionThis species is distributed in the Atlantic Ocean along Gabon and Liberia. Island of Banié Komo estuary Port Gentil, Gabon