Helmet Shell
NameHelmet Shell
Scientific NameCypraecassis testiculus
Common NameReticulated Helmet
FamilyCassidae
GenusCypraecassis
Speciestesticulus
Geographic DistributionWestern Atlantic Ocean, ranging from North Carolina (USA) to Brazil, including the Caribbean Sea, Gulf of Mexico, and Bermuda.
Habitatsubtidal
Shell Shapeconical
Average Size (mm)50
Identifying FeaturesRobust, heavy shell; low spire; strong nodules on the shoulder; broad, bright orange aperture with prominent, strong teeth on both the outer lip and the columellar shield; reticulated or spotted exterior pattern.
Raritycommon
Author CitationLinnaeus, 1758
Description
A robust, heavy marine gastropod shell, typically ovate-conical in shape with a low spire. The exterior is sculptured with axial ribs and spiral cords, often forming nodules, particularly on the shoulder. The aperture is wide and semi-ovate, featuring a thickened, denticulate outer lip and a broad, calloused columellar shield with folds or teeth. The specimen shown is *Cypraecassis testiculus*, also known as the Reticulated Helmet.
