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The World of Protozoa, Rotifera, Nematoda and Oligochaeta

Ref ID : 7516

J. Grain, P. Didier, R.K. Peck, and M.R. de Santa Rosa; [Etude Ultrastructurale et Position Systematique des Cilies du Genre Cyclogramma Perty, 1852]. Protistologica XIV(2):225-240, 1978

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The ultrastructural study of Cyclogramma trichocystis and C. blochmanni shows the existence of a stichodyade paroral type and of three adoral organels looking like peniculus. These characters allow us to include the Ciliates of the genus Cyclogramma in the Class Oligohymenophora, Sub-class Hymenostomatida. Beside, the existence of a basket and of a semi-autonomus stomatogenesis, added to the preceding characters, allows up to create the new Order of Parahymenostomatida which preceedes those of Hymenostomatida, Scuticociliatida and Astomatida.