http://en.wikipedia.org/wiki/Protist
Although systematists today do not treat protists as a formal taxon, the term protist is currently used in two ways. The most popular contemporary definition is a phylogenetic one that identifies a paraphyletic group: a protist is any eukaryote that is not an animal, (land) plant, or (true) fungus, excluding unicellular groups like the Myxosporida,Microsporidia, many Chytridiomycetes and yeasts.
Although systematists today do not treat protists as a formal taxon, the term protist is currently used in two ways. The most popular contemporary definition is a phylogenetic one that identifies a paraphyletic group: a protist is any eukaryote that is not an animal, (land) plant, or (true) fungus, excluding unicellular groups like the Myxosporida,Microsporidia, many Chytridiomycetes and yeasts.
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