Paludinella minima is a species of small salt marsh snail with an operculum, an aquatic gastropod mollusk or micromollusk in the family Assimineidae. This species is endemic to Japan.
References
Further reading Chiba S., Davison A. & Mori H. (2007) "Endemic Land Snail Fauna (Mollusca) on a Remote Peninsula in the Ogasawara Archipelago, Northwestern Pacific". Pacific Science 61(2): 257–265. .