Tapestry Venus, Checkered Clam, or Squat Venus Clam
Phylum: Mollusca, Class: Bivalvia, Order: Venerida, Family: Veneridae, Genus: Chione, Species: Chione squamosa · Veneridae (Venus Clams) · Bivalve (Fan/Heart-shaped). This is a single valve (right valve).
Species
Chione squamosa (High confidence)
Shell Type
Bivalve (Fan/Heart-shaped). This is a single valve (right valve).
Family
Veneridae (Venus Clams)
Size
Approximately 1.0 to 1.5 inches in length. This is standard for the species, which typically matures around 25-40mm.
Color & Pattern
Cream-white to pale tan base with a distinct tapestry of light brown angular banding and concentric zig-zags. The pattern appears natural with minimal beach-bleaching. Interior usually shows a white or slightly yellowish porcelain finish.
Rarity
Common. Frequently found on beaches in the Baja California Sur region after tides or storms.
Habitat
Found in shallow marine environments, typically intertidal to 20 meters depth. Prefers sandy or silty-sand substrates where it can burrow.
Geographic Range
Eastern Pacific coastline from Southern California through the Gulf of California (Cabo San Lucas) down to Panama.
Description
A sturdy, trigonal (triangularly rounded) shell characterized by heavy sculptural elements. The surface features strong concentric ribs crossed by radial ribs, creating a distinctive 'checkered' or 'beaded' texture where they intersect. The hinge is strong with well-defined cardinal teeth.
Key Features
Triangular-ovate shape; lattice-like sculpture formed by intersecting radial and concentric lines; distinct light brown 'chevron' pattern; finely crenulated (notched) inner margins.
Collector Value
Low to medium. While very beautiful to look at, it is a common species. It is highly desirable for beginner collectors or those building a regional 'Cabo' or 'Panamic' collection. Estimated value: $2-$5 USD.
Condition Notes
Good condition. The exterior sculpture remains sharp and the pattern is vivid, suggesting it was not tumbled in the surf for long. There is a small chip on the anterior margin and minor weathering of the umbo. Collectibility Grade: Fine.
Interesting Facts
The name 'Venus Clam' refers to the Roman goddess of love, reflecting the shell's often beautiful and symmetrical appearance. These clams are active burrowers using a strong muscular foot.
Ecological Role
Suspension feeder that filters plankton and organic detritus from the water column. They serve as a vital food source for sea stars, shorebirds, and snails like Murex.
Similar Species
Chione undatella (Frilled Venus), which has more prominent, leaf-like concentric frills, and Leukoma staminea, which usually lacks the sharp geometric color pattern.
Beach Finding Tips
Look in the 'wrack line' (debris line) after a high tide on sandy beaches around Cabo San Lucas. Sifting through patches of broken shell fragments often reveals these intact valves.
Notes
Cabo