Zebinella sororculaZebinella sororcula is an extinct species of minute sea snail, a marine gastropod mollusk or micromollusk in the family Rissoinidae.DescriptionThe length of the shell vries between 5¼ - 6½ mm, its diameter between 2½ - 2¾ mm.DistributionFossils of this marine species were found in Middle Miocene strata in Central Europe.