Zebinella planata
Zebinella planata is an extinct species of minute sea snail, a marine gastropod mollusk or micromollusk in the family Rissoinidae.[1] DescriptionThe length of the shell attains 8.3 mm, its diameter 3 mm. (Original description) The species differs slightly from Zebinella decussata (Montagu, 1803), being proportionately wider, with the whorls flatter, the sculpture less sharply defined and tending to become obsolete. The shell is also somewhat larger. [2] DistributionFossils of this species were found in Tertiary strata in Florida, USA. References
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