Order: No kinetidal specializations at oral region.
Family: Free swimming; most body kineties bipolar, cytostome apical.
Genus: Body kineties inflect into slight anterior depression (Illustrated Guide, 1985).
Species:
Bursellopsis sp. ??,
cell body 75 μm long, 67 μm wide,
x 400, Japan 1998 by Y. Tsukii
50 μm
100 μm
150 μm; x 400