Turbonilla iolausiTurbonilla iolausi is a species of sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies.DescriptionThe shell grows to a length of 4.2 mm.DistributionThis marine species occurs in the Gulf of Mexico, in the Pliocene beds of North St. Petersburg, Florida, at depths of up to 46 m.