Pyramidellidae: Pyramidellidae, common name the pyram family, or pyramid shells, is a voluminous taxonomic family of mostly small and minute ectoparasitic sea snails, marine heterobranch gastropod molluscs. The great majority of species of pyrams are micromolluscs. (Biology) [100%] 2026-04-20 [Pyramidellidae] [Gastropod families]...
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