Cross Keynote Limpet
NameCross Keynote Limpet
Scientific NameFissurella crucifera
Common NameCross Keynote Limpet
FamilyFissurellidae
GenusFissurella
Speciescrucifera
Geographic DistributionSoutheastern Pacific Ocean, primarily along the coasts of Chile and Peru.
Habitatintertidal
Shell Shapeconical
Average Size (mm)25-35
Identifying FeaturesKeyhole-shaped apical foramen; low-conical, oval shell; distinctive dark radiating bands forming a cross-like pattern; fine radial and concentric sculpture.
Raritycommon
Author CitationSowerby I, 1835
Description
A low-conical, oval limpet shell characterized by a distinctive keyhole-shaped apical opening (foramen). Its exterior displays a pale, often creamy-white or yellowish background adorned with dark green to blackish radiating bands or patches, which frequently form a cruciform (cross-like) pattern, giving it its common name. The surface is sculptured with fine radial ribs and concentric growth lines, resulting in a textured appearance. The interior is typically white.
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