micromollusk

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English[edit]

shells of the freshwater snail Potamopyrgus antipodarum compared to an American dime, which is 18 mm in diameter.

Etymology[edit]

micro- +‎ mollusk

Noun[edit]

micromollusk (plural micromollusks)

  1. A shelled (usually marine) mollusk that is extremely small even at full adult size.