
The oligotrichs are a group of ciliate protozoa, included among the spirotrichs. They have prominent oral cilia, which are arranged as a collar and lapel, in contrast to the choreotrichs where they form a complete circle. The body cilia are reduced to a girdle and ventral cilia. In Halteria and its relatives, they form bristles or cirri; however t...
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http://en.wikipedia.org/wiki/Oligotrich

any spherical to pear-shaped protozoan of the ciliate order Oligotrichida, found in fresh, salt, and brackish water. Body cilia (minute, hairlike ...
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http://www.britannica.com/eb/a-z/o/15

oligotrich, oligotrichs The oligotrichs are a group of ciliate protozoa, included among the spirotrichs. They have prominent oral cilia, which are arranged as a collar and lapel, in contrast to the choreotrichs where they form a complete circle. The body cilia are reduced to a girdle and ventral cilia. Relat...
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http://www.wordinfo.info/words/index/info/view_unit/1460/7
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