Cross-barred Venus, Elegant Venus Clam
Phylum: Mollusca > Class: Bivalvia > Subclass: Heterodonta > Order: Venerida > Superfamily: Veneroidea > Family: Veneridae > Genus: Chione > Species: Chione elevata · Veneridae (Venus Clams) · Bivalve (single valve/half shell), trigonal/ovate shape
Species
Chione elevata (formerly Chione cancellata)
Shell Type
Bivalve (single valve/half shell), trigonal/ovate shape
Family
Veneridae (Venus Clams)
Size
Approximately 1 to 1.5 inches (25-38 mm) in height. Typical adult size for Chione elevata ranges from 0.75 to 2 inches (20-50 mm).
Color & Pattern
Displays a striking banded pattern consisting of alternating concentric zones of charcoal-grey, slate, cream, and pale pinkish-orange near the margins. The radial ribs cross strong concentric ridges creating a characteristic lattice or cross-hatched texture. Exterior colors are well-preserved with light natural weathering along the outer margin.
Rarity
Very Common. Frequently washed ashore on sandy beaches and barrier islands across its range.
Habitat
Shallow marine waters, intertidal and subtidal zones down to about 40 meters. Prefers muddy sand, clean sand, and seagrass bed habitats where it burrows shallowly below the sediment surface.
Geographic Range
Western Atlantic from North Carolina down through Florida, the Gulf of Mexico, and into the Caribbean Sea.
Description
A single right valve of a Cross-barred Venus clam featuring a sturdy, heart-shaped or triangular-ovate profile. The surface is adorned with prominent raised concentric ridges (lamellae) intersected by fine radial ribs, creating a distinct cross-barred or windowpane lattice texture. The beak (umbo) curves anteriorly. Coloration transitions from deep dark grey near the umbo through alternating cream and slate bands, finishing with warm pinkish-salmon tones near the ventral edge.
Key Features
Sharp lattice/grid texture formed by elevated concentric ribs crisscrossed by radial lines, prominent turned-in umbo, rounded ventral margin with fine internal crenulations, and bold alternating dark grey and pastel color bands.
Collector Value
Low monetary value (under $1 to $3) due to its abundance, but highly valued aesthetically by crafters and beachcombers for its beautiful colors and pronounced lattice pattern.
Condition Notes
Good to Very Good condition. The single valve is structurally complete with intact margins, clear sculpture, and strong natural pigmentation. Minor surface erosion around the beak area, typical of beach-drift specimens. Grade: Good (Fine for beachcombed single valves).
Interesting Facts
Cross-barred Venus clams use a powerful muscular foot to dig into sandy sediment. For decades, this common Atlantic species was classified as Chione cancellata, but genetic and morphological studies in 2000 split the complex, reclassifying the Florida/US Atlantic species as Chione elevata.
Ecological Role
Infaunal filter feeder that purifies water by straining plankton and organic detritus. Serves as a crucial food source for predatory gastropods (like whelks and moon snails), sea stars, crabs, shorebirds, and bottom-feeding fish.
Similar Species
Chione cancellata (true Caribbean Cross-barred Venus, found further south in the West Indies), Chione intapurpurea (First Venus, which features purple interior staining), and Mercenaria mercenaria (Hard Clam/Quahog, which lacks the sharp cross-hatched exterior ridges).
Beach Finding Tips
Look along low-tide shorelines, wrack lines, and shell mounds after storms or strong onshore winds. Extremely common on Gulf Coast and Florida Atlantic beaches, particularly around inlets and bay mouths.