Cassididae
plural noun
Cas·sid·i·dae
kəˈsidəˌdē,
ka-
: a family of usually large marine gastropod mollusks (order Pectinibranchia) having thick heavy shells of which many are used for making cameos see helmet shell
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“Cassididae.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Cassididae. Accessed 30 Nov. 2024.
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