Punctulum wyvillethomsoniPunctulum wyvillethomsoni is a species of small sea snail, a marine gastropod mollusk or micromollusk in the family Rissoidae.DistributionThis species occurs in European waters and in the Northwest Atlantic Ocean.DescriptionThe maximum recorded shell length is 3.8 mm.HabitatMinimum recorded depth is 95 m. Maximum recorded depth is 300 m.