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Definition of Calcarean
1. Noun. (zoology) Any sponge, of the class ''Calcarea'', that has a skeleton composed of calcium carbonate spicules ¹
¹ Source: wiktionary.com
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1. Noun. (zoology) Any sponge, of the class ''Calcarea'', that has a skeleton composed of calcium carbonate spicules ¹
¹ Source: wiktionary.com