Petricola dactylus
NamePetricola dactylus
Scientific NamePetricola dactylus
Common NameFinger-shaped rock borer
FamilyPetricolidae
GenusPetricola
Speciesdactylus
Geographic DistributionMediterranean Sea and adjacent Atlantic coasts (e.g., Portugal, Spain).
Habitatintertidal
Average Size (mm)30-70
Identifying FeaturesElongated, finger-like shape; prominent, irregular concentric growth lines; fine radial sculpture, especially towards the anterior end; often has an irregular outline conforming to its burrow.
Raritycommon
Author Citation(G.B. Sowerby I, 1823)
Description
An elongated, white bivalve shell, characteristic of a rock-boring clam. The shell exhibits prominent concentric growth lines and fine radial sculpture, giving it a textured appearance. The specimen in the image is a single valve, likely found on a sandy or muddy shore, with some sediment adhering to its surface.
