Cassidae
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.
| 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 | |
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See text | |
| Synonyms | |
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About 60 species comprise the family Cassidae; an example is Cypraecassis rufa.
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