Seven of the 32 species are known from only one or two sites, and nearly half the mollusks occur at 10 or fewer sites, making recovery from habitat loss difficult or even impossible for some species.

Research now explains the extraordinary diversity in body shape, size, behavior, habitat and genome of mollusks, of which there are nearly 100,000 described species (and many yet to be discovered).

The Mollusca collection is one of the most comprehensive and significant in the world, constantly in demand by the malacological research community. The type collection is the most scientifically ...