Petricolaria cognata
NamePetricolaria cognata
Scientific NamePetricolaria cognata
Common NameCognate Petricola
FamilyPetricolidae
GenusPetricolaria
Speciescognata
Geographic DistributionWestern Atlantic Ocean, ranging from North Carolina (USA) south to Brazil, including the Gulf of Mexico and the Caribbean Sea.
Habitatintertidal
Average Size (mm)Typically ranges from 30 to 70 mm in length.
Identifying FeaturesKey features include its elongated, somewhat tubular shape, the presence of fine radial sculpture (ribs) especially on the anterior portion, and concentric growth lines. The shell is relatively thin but strong, adapted for boring.
Raritycommon
Author Citation(C. B. Adams, 1852)
Description
An elongated, cylindrical to subcylindrical bivalve shell, typically off-white or cream in color. The shell exhibits fine concentric growth lines and distinct radial ribs, particularly noticeable towards the anterior end, giving it a somewhat sculptured appearance. The specimen in the image appears to be a single valve, worn, and covered with some sand particles, consistent with a beach-found shell.
