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The Smithsonian Institution’s foraminiferal collections, collectively identified as the Cushman Collection, consist of nearly 17 000 primary type slides, more than 240 000 secondary type and identified slides and thousands of bulk samples and washed residue samples from important type localities, stratigraphic sections and land-based and deep-sea boreholes. The collection grew slowly from its beginning in the late 1800s, but acquisition of Joseph A. Cushman’s entire research collection in 1950 dramatically increased its size and international prominence. Following Cushman’s gift, the collection grew over three times larger during the late twentieth century as additional foraminiferal slides and samples were...

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