Diodora saturnalis
NameDiodora saturnalis
Scientific NameDiodora saturnalis
Common NameSaturn Keyhole Limpet
FamilyFissurellidae
GenusDiodora
Speciessaturnalis
Geographic DistributionWestern Atlantic Ocean, primarily off the coast of Brazil.
Habitatintertidal
Shell Shapeconical
Average Size (mm)20-30
Identifying FeaturesThe most distinctive features are the oval, low-conical shell with a central, oval-shaped apical opening (keyhole). The shell sculpture consists of numerous radial ribs intersected by concentric growth lines, giving a granular or cancellate appearance. The internal callus around the keyhole is typically purplish.
Rarityrare
Author Citation(Carpenter, 1857)
Description
Diodora saturnalis is a species of keyhole limpet, characterized by its low-conical, oval shell and a distinctive apical opening (keyhole). The shell exhibits a cancellate sculpture formed by intersecting radial ribs and concentric growth lines. The interior of the keyhole often displays a purplish hue.
