[The importance of electron microscopy in the systematics of unicellular organisms: for example, the ciliates of the genus Cyclogramma].

With a parorale of "stichodyade-type", and three adoral organelles like peniculus, the genus Cyclogramma may be included in the Oligohymenophora class, subclass Hymenostomata. The presence of a basket as cytopharyngeal apparatus, and the semi-autonomous stomatogenesis justify, for this genus, the establishment of the new order Parahymenostomatida.