Zebinella planata
Zebinella planata is an extinct species of minute sea snail, a marine gastropod mollusk or micromollusk in the family Rissoinidae.
Description
The length of the shell attains 8.3 mm, its diameter 3 mm.The species differs slightly from Zebinella decussata, being proportionately wider, with the whorls flatter, the sculpture less sharply defined and tending to become obsolete. The shell is also somewhat larger.