An alternative or variant taxonomic family name for certain nudibranchs, sometimes used interchangeably with or to distinguish subgroups within Aeolidae.
From 'aeolid' + '-idae', representing a taxonomic refinement. The duplication of the suffix shows how scientific classification has evolved with additional taxonomic ranks and sub-divisions.
This shows taxonomy in action—as scientists discovered more nudibranchs, they needed to create sub-families, leading to names like this that seem repetitive but actually clarify evolutionary relationships.
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