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Euglenophyceae: Sphenomonadales
Euglenida: Sphenomonadida: Anisonemidae

 Anisonema emarginatum
Dujardin

Anisonema Genus: Generally ovoid; asymmetrical; plastic or rigid; a slit-like ventral furrow; flagella at anterior end; cytopharynx long; contractile vacuole anterior; nucleus posterior (Kudo, 1966). Lightly striated; trailing flagellum longer than anterior one (How to know the protozoa, 1979).
Species:

Anisonema sp. (A. emarginatum or acinus smaller type), cell body oval, 18 μm long, 9 μm wide, recurrent (trailing) flagellum 56 μm long x 400, Japan, 199? by Y. Tsukii
Anisonema Anisonema

A. acinus Dujardin: 25-40 μm long, 16-22 μm wide; rigid, oval; somewhat flattened; pellicle slightly striated (Kudo, 1966). Rigid; faintly spirally striated; fresh water (How to know the protozoa, 1979).

* A. emarginatum Stokes: Rigid, 14 μm long; flagella long (Kudo, 1966).

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