Lister's Keyhole Limpet
NameLister's Keyhole Limpet
Scientific NameFissurella listeri
Common NameLister's Keyhole Limpet
FamilyFissurellidae
GenusFissurella
Specieslisteri
Geographic DistributionWestern Atlantic Ocean, including Florida, the Caribbean Sea, and the West Indies.
Habitatintertidal
Shell Shapeconical
Average Size (mm)20-40
Identifying FeaturesKeyhole-shaped apical foramen, strong radial ribbing, scalloped shell margin, and characteristic reddish-brown radial markings on a whitish background.
Raritycommon
Author Citation(Menke, 1834)
Description
Lister's Keyhole Limpet is a species of sea snail, a marine gastropod mollusk in the family Fissurellidae, the keyhole limpets. Its shell is characterized by a low conical shape with an oval base and a distinctive keyhole-shaped opening (foramen) at the apex. The exterior surface is sculptured with prominent radial ribs, which often bear color markings and result in a crenulated or scalloped margin. The interior is smooth and typically white, with a darker area around the foramen.
