Semicassis pyrum
| Semicassis pyrum | |
|---|---|
| A shell of Semicassis pyrum, lateral view | |
| Scientific classification | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | Littorinimorpha |
| Family: | Cassidae |
| Genus: | Semicassis |
| Species: | S. pyrum |
| Binomial name | |
| Semicassis pyrum (Lamarck,1822) | |
Semicassis pyrum, common name the "pear bonnet" or "common helmet", is a species of large sea snail, a marine gastropod mollusc in the family Cassidae, the helmet shells, bonnet shells and their allies.