Description of Ancyromonas:
Circumscription: Heterotrophic gliding flagellates, small (<10 µm), with one recurrent flagellum and one anterior flagellum. Mostly documented at light microscopical level some ultrastructural information µmylnikov 1990) under the generic name Heteromita. Ultrastructural identity: Mitochondria with flat cristae. Cell surface supported by materials both within and external to the cell membrane. Two flagella, bases at right angles, three microtubular roots. Ball and cone style extrusomes present.Synapomorphy: None specified. Composition: Single genus with probably only three species.