Description of Trigonomonas
provided by BioPedia
Hexamatine diplomonads, triangular or spindle-shaped (8-30µm), often twisted spirally, with the posterior end of the body flattened; only 3 flagella are inserted at the base of each nuclei; one flagellum is longer than others and used for locomotion; cytostomal grooves extend from the flagella emergence to the posterior of the cell; moving contractile vacuole; while swimming, the cell rotates about the longitudinal axis; cysts smouth; feed osmotrophically and several species live in freshwater rich in organic matter.
