Cassidae
| Cassidae | |
|---|---|
| Lateral view of a shell of Semicassis pyrum | |
| Scientific classification | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | Littorinimorpha |
| Superfamily: | Tonnoidea |
| Family: | Cassidae Latreille, 1825 |
| Genera | |
|
See text | |
| Synonyms | |
| |
The Cassidae are a taxonomic family of medium-sized, large, and sometimes very large sea snails commonly called helmet snails or bonnet snails. These are marine gastropod mollusks in the superfamily Tonnoidea and the clade Littorinimorpha.
About 60 species comprise the family Cassidae; an example is Cypraecassis rufa.
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