Cross-barred Venus Clam
Phylum Mollusca, Class Bivalvia, Order Venerida, Family Veneridae, Genus Chione, Species Chione cancellata · Veneridae (Venus Clam family) · Bivalve (two-shelled), fan/sub-circular shaped, single valve
Species
Chione cancellata
Shell Type
Bivalve (two-shelled), fan/sub-circular shaped, single valve
Family
Veneridae (Venus Clam family)
Size
Approximately 0.5 to 0.75 inches, which is small to medium for this species. Adults typically range from 0.75 to 1.5 inches.
Color & Pattern
Uniform creamy-white coloration, likely sun-bleached. The exterior features crisp, prominent radial ribs crossed by concentric lamellae creating a grid-like pattern.
Rarity
Common
Habitat
Found in shallow marine waters, typically in sandy or muddy substrates, often in seagrass beds from the intertidal zone down to shallow subtidal depths.
Geographic Range
Western Atlantic Ocean, ranging from North Carolina through the Caribbean, Gulf of Mexico, and down to Brazil.
Description
A sturdy, compact bivalve shell characterized by its distinct reticulated sculpture formed by intersecting radial ribs and elevated concentric ridges. The margin is finely crenulated, and the shape is generally rounded to triangular.
Key Features
Distinct grid-like pattern formed by deeply incised radial ribs crossing elevated concentric lamellae, creating a cancellated or cross-barred texture.
Collector Value
Low to moderate individual value as it is a very common beach shell, but highly valued for educational collections due to its textbook sculptural texture.
Condition Notes
Single valve only (half shell), shows signs of minor wear and sun-bleaching to a pristine white, but the sculptural details remain very crisp. Collectibility grade is Good.
Interesting Facts
Venus clams are suspension feeders, using their siphons to draw in water and filter out microscopic plankton and organic particles from the surrounding environment.
Ecological Role
Serves as an important food source for bottom-feeding fish, rays, and carnivorous gastropods, while helping benthic nutrient cycling through filter feeding.
Similar Species
Chione elevata (Florida Cross-barred Venus), which can be very similar; differentiated primarily by subtle variations in the spacing and prominence of the concentric ridges.
Beach Finding Tips
Look along shell lines on sandy Gulf and Atlantic beaches, especially after storms or during low tide when wave action deposits smaller drifted shells.