This is a species of Ringicula, possibly R. fossulata. It is a tiny shell, found with several others at a depth of about 3m on a shallow water landing craft wreck on the lagoon side of Kwajalein Island by Christina Sylvester. It closely resembles and is likely the one figured by Gosliner et al (2018) as Ringicula sp. 3.
Created 20 March 2017