Common · Nature
Cassidae
Family of medium-sized and large sea snails
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.
From Wikipedia
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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