Wikipedia
Crepipatella
Crepipatella is a genus of sea snails, marine gastropod mollusks in the family Calyptraeidae, the slipper snails and cup-and-saucer snails.
The snails in this genus were formerly all thought to belong to the genus Crepidula, but DNA sequence data show that they are a separate genus.
A recent revision of the South American Species has led to some significant taxonomic changes, as well as the addition of a new species - Crepipatella occulta Veliz et al. 2012.