Description of Nassophorea
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Intramacreonucleate ciliates; somatic cilia as monokinetids, dikinetids or polykinetids; monokinetid with anterior, tangential transverse ribbon, a divergent postciliary ribbon, and anteriorly-directed kinetodesmal fibril; for dikinetids, only the anterior kinetosome has a transverse ribbon while the posterior kinetosome has postciliary ribbon and kinetodesmal fibril; polykinetids are cirrus-like in one family (i.e., Discotrichidae); somatic alveoli well-developed with paired alveolocysts present in two orders; cyrtos well-developed in several groups, and typical of class; oral polykinetids having alveoli between kinetosomal rows; extrusomes, when present, are trichocysts.
