Cassidae | |
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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[1] | |
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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.[1]
About 60 species comprise the family Cassidae; an example is Cypraecassis rufa.