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At the Museum of Natural History in Washington, DC, a single specimen of the planktonic marine organism B. pumilio is preserved as the reference organism for the species. This specimen is a holotype, meaning it was the basis of the first formal scientific description of B. pumilio. _____ the reference organism for the planktonic G. inflata, preserved at the Natural History Museum in London, is a neotype, meaning it acts as a reference organism but is not the exact specimen originally described.