Macrarene diegensisMacrarene diegensis is a fossil species of small sea snail, a marine gastropod mollusk in the family Liotiidae.DescriptionThe height of the shell attains 20 mm, its diameter 25 mm. The narrowly umbilicated shell contains 4 whorls with distinct sutures and a projecting peripheral keel. The oblique aperture is circular. Its color is chalky white. This fossil species shows some similarities with Macrarene coronadoensis and Macrarene californica.DistributionThis species is known only as a fossil. It is found in the San Diego Formation, California, and dates from the Pliocene.