1) Family cypraeidae 2) Mollusk family 
clade Hypsogastropoda Cypraeidae, common name the cowries (singular: cowry), is a taxonomic family of small to large sea snails. These are marine gastropod mollusks in the superfamily Cypraeoidea, the cowries and cowry allies. ==Shell description== Cypraeidae have adult shells which are very rounded, almost like an egg; they do not look like a typ...
(from the article `gastropod`) ...during old age; common on rocks and clamshells and in dead large snail shells in most oceans.Superfamily CypraeaceaCowrie shells (Cypraeidae) and ...
[n] - family of marine gastropods comprising the cowries
family Cypraeidae noun family of marine gastropods comprising the cowries