Fig. 5 in Ultrastructural Studies on a Model Tintinnid - Schmidingerella meunieri (Kofoid and Campbell, 1929) Agatha and Strüder-Kypke, 2012 (Ciliophora). I. Somatic Kinetids with Unique Ultrastructure

Fig. 5. Schematic drawing of two consecutive dikinetids in an obliquely orientated dorsal kinety or posterior portion of the ventral kinety in Schmidingerella meunieri compiling all observations from transmission electron micrographs. The 20°–30° angles of the dikinetids are not considered. The posterior basal bodies insert somewhat more distally than the anterior ones and their cilia are connected with the left walls of the pits. The postciliary ribbons are shown in abridged form. I–III, extraordinary microtubular ribbons I–III; AP, axosomal plate; Axn, axoneme; Axs, axosome; CC, cytoplasmic connection; CG, core granule; CM, cortical microtubules; Co, condylocilium; CP, ciliary pit; CT, central tubules; EC, electron-dense cuff; Kd, kinetodesmal fibril; P, perilemma; Pc, postciliary ribbon; T, transverse ribbon.