The Nautilus Log
Circe rivularis

Circe rivularis

NameCirce rivularis
Scientific NameCirce rivularis
Common NameNo widely accepted common name, sometimes referred to as a Venus clam.
FamilyVeneridae
GenusCirce
Speciesrivularis
Geographic DistributionIndo-Pacific region, including the Red Sea, Persian Gulf, Indian Ocean, and Western Pacific.
Habitatintertidal
Average Size (mm)20-40
Identifying FeaturesCharacterized by prominent, regular, concentric lamellae (ridges) on the shell surface, especially towards the margin. The shell is relatively thick and solid, with slightly anterior umbones. Lunule and escutcheon are typically well-defined.
Dietfilter-feeder
Raritycommon
Author Citation(Born, 1778)

Description

A single valve of a bivalve shell, identified as Circe rivularis. The shell is off-white to cream in color, with prominent, regular concentric ridges (lamellae) covering the surface, particularly noticeable towards the ventral margin. Some sandy debris adheres to the shell's edges and within the grooves. The overall shape is sub-trigonal to sub-circular, and it appears moderately flattened.

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