Chionopsis gnidia
NameChionopsis gnidia
Scientific NameChionopsis gnidia
Common NameGnidia Venus Clam, Frilly Venus Clam
FamilyVeneridae
GenusChionopsis
Speciesgnidia
Geographic DistributionEastern Pacific Ocean, ranging from Baja California, Mexico, south to Peru.
Habitatsubtidal
Average Size (mm)50-100
Identifying FeaturesStrong, elevated, concentric, frilly or lamellar ridges (lamellae) that are often crenulated or wavy, especially towards the shell margins. Prominent, prosogyrate umbones. Well-defined lunule and escutcheon.
Raritycommon
Author Citation(Broderip, 1835)
Description
A bivalve seashell, specifically a Venus clam, characterized by its prominent, elevated, and frilly concentric ridges (lamellae) that give it a distinctive textured appearance. The shell is ovate to subtrigonal in shape, moderately inflated, and typically exhibits a creamy white to light tan coloration, often with darker growth lines or bands. The umbones are pointed and slightly prosogyrate. This specimen clearly shows the characteristic lamellar sculpture.
