GrandicrepidulaGrandicrepidula is a genus of sea snails, marine gastropod mollusks in the family Calyptraeidae, the slipper snails or slipper limpets, cup-and-saucer snails, and Chinese hat snails.SpeciesSpecies within the genus Grandicrepidula include:Grandicrepidula collinae Marshall, 2003 ''Grandicrepidula grandis''