| euglenida | An order of plantlike, flagellate protozoa commonly found in freshwater. Characteristics include one or two flagella emerging from an anterior invagination of the cell and chloroplasts absent in many genera. (12 Dec 1998) |
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| Euglenidae | A family of green (phytomonad) flagellates (subphylum Mastigophora, class Phytomastigophorea). (05 Mar 2000) |