pleuronematida pleuronematida pleuronematida is an order of predominantly free-living ciliates in the subclass scuticociliatia. pleuronematida scientific classification domain: eukaryota clade: diaphoretickes clade: sar clade: alveolata phylum: ciliophora class: oligohymenophorea subclass: scuticociliatia order: pleuronematidafauré-fremiet in corliss, 1956 families calyptotrichidae small & lynn, 1985 ctedoctematidae small & lynn, 1985 cyclidiidae ehrenberg, 1838 dragescoidae jankowksi, 1980 histiobalantiidae de puytorac & corliss in corliss, 1979 peniculistomatidae fenchel, 1965 pleuronematidae kent, 1881