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The class Gastropoda or the gastropods, also previously known as gasteropods, or univalves, and more commonly known as snails and slugs, are the most diversified class in the phylum of mollusks, with (60,000-75,000) to 80,000 known living species.
There are 409 recent families of gastropods, but fossils have been classified as showing 202 further families This [...]

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