Left side view of Saprodinium dentatum (Lauterborn,1901) Lauterborn,1908. Odontostome ciliate with laterally compressed complex rigid pellicle. 8 posterior spines with needle-thin tips. Curved anterior spine projecting to left. Spinous projection adjacent to cytostome. Anterior ciliature and sharp posterior spines respectively distinguish this genus from Atopodinium and Epalxella. Polysaprobic. Macronucleus in three rounded parts. From stagnant freshwater pond with decaying leaves near Boise, Idaho. Brightfield.