Polymastigida

Poly·mas·ti·gi·da (pol″e-mas″tĭ-giґdə) in older systems of classification, an order of protozoa of the phylum Sarcomastigophora, subphylum Mastigophora, consisting of small organisms with three to eight or more flagella and usually one or two nuclei; they are found in the digestive tract of various arthropods and vertebrates.