Eight-rib Emarginula
NameEight-rib Emarginula
Scientific NameEmarginula octoplicata
Common NameEight-rib Emarginula
FamilyFissurellidae
GenusEmarginula
Speciesoctoplicata
Geographic DistributionIndo-Pacific region, including areas such as the Philippines, Japan, and parts of Australia.
Habitatsubtidal
Shell Shapeconical
Average Size (mm)10-20
Identifying FeaturesThe most distinctive features are the prominent, often nodulose radial ribs, which give the shell a corrugated appearance. The common name 'Eight-rib' refers to a characteristic number of primary ribs. As with other *Emarginula* species, it possesses an anterior slit or emargination on the shell margin, though this is not visible in the dorsal view provided. The overall robust and sculptured texture is also characteristic.
Raritycommon
Author Citation(Jonas, 1846)
Description
A small, cap-shaped marine gastropod shell, characterized by its strong, often nodulose radial ribs and uniform off-white to cream coloration. The shell exhibits a conical profile with a somewhat elevated apex and a crenulated margin.
