The family classification of sponges that includes the genus Grantia, characterized by simple radial symmetry.
From the genus Grantia plus the taxonomic suffix '-idae' (standard Latin family name ending), following Linnaean binomial nomenclature conventions.
The '-idae' suffix is used across all of biology for families (Felidae for cats, Hominidae for humans), creating a universal naming system that lets scientists worldwide instantly know they're discussing related organisms.
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