Unedogemmula contiguaUnedogemmula contigua is an extinct species of sea snail, a marine gastropod mollusk in the family Turridae, the turrids.DescriptionThe length of the shell attains 24 mm.DistributionThis extinct marine species was found in Miocene strata in Italy, Spain and Turkey; in Pliocene strata in Alpes-Maritimes, France.