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The purpose of the Catalogue of Life is to " . . . collate the names of all species set in the context of a taxonomic hierarchy and of their distribution. It is estimated that less than a fifth of the world's biota has been identified, and a single checklist is an important step in effectively coordinating efforts to document biodiversity." About Catalogue of Life
A site brought to you by the U.S. National Institutes of Health; Digital Projects include films and videos, biographies of the leaders in biomedical research, historic anatomical atlases, and much, much more.