False Angelwing
NameFalse Angelwing
Scientific NamePetricola pholadiformis
Common NameFalse Angelwing
FamilyPetricolidae
GenusPetricola
Speciespholadiformis
Geographic DistributionNative to the Atlantic coast of North America, from Canada to Florida. It has become an invasive species in many parts of the world, including the Pacific coast of North America, Europe (e.g., British Isles, North Sea), and Australia.
Habitatintertidal
Average Size (mm)Typically ranges from 30 to 60 mm in length, though some specimens can reach up to 80 mm.
Identifying FeaturesKey identifying features include its elongated, somewhat rectangular shape; numerous and distinct radial ribs, which are more pronounced on the posterior half; and a slightly gaping posterior end. It superficially resembles true angelwing clams (Pholadidae) but is generally smaller, less fragile, and lacks the extreme elongation and accessory plates of many pholads.
Raritycommon
Author CitationLamarck, 1818
Description
The False Angelwing is a bivalve mollusk characterized by its elongated, oblong to somewhat rectangular shell. The shell is equivalve, meaning both valves are similar in size and shape. It features prominent radial ribs, particularly noticeable on the posterior half, and concentric growth lines. The shell is relatively thin but strong.
