Paratrophon cheesemani
NameParatrophon cheesemani
Scientific NameParatrophon cheesemani
Common NameCheeseman's Rock Snail
FamilyMuricidae
GenusParatrophon
Speciescheesemani
Geographic DistributionEndemic to New Zealand, primarily found around the North Island and the northern parts of the South Island.
Habitatintertidal
Shell Shapefusiform
Average Size (mm)10-20 mm
Identifying FeaturesKey identifying features include its fusiform shape, prominent nodulose sculpture formed by intersecting spiral ribs and axial folds, a distinct ovate aperture with a thickened outer lip (often denticulate internally), and a short siphonal canal. Its small size and typical New Zealand distribution are also characteristic.
Raritycommon
Author Citation(Hutton, 1882)
Description
A small, robust marine snail shell, characterized by its fusiform shape and prominent sculpture. The shell exhibits strong spiral ribs and axial folds, which often create a nodulose or cancellate pattern, particularly at their intersections. The spire is moderately elevated, and the sutures are distinct. The aperture is ovate, with a thickened outer lip that may show internal denticles. A relatively short, open siphonal canal is present at the base of the aperture. The shell's exterior is typically dull, while the interior of the aperture can be darker.
