Cercomonas Dujardin, 1841 (ref. ID; 4907, 6733)
Order Cercomonadida Vickerman 1983 in Lee 1985 (ref. ID; 4907)

Synonym Cercobodo Krassilschik (ref. ID; 4714)

[ref. ID; 1618]
Biflagellate, both flagella arising from anterior end of body; one directed anteriorly and the other runs backward over body surface, becoming a trailing flagellum; plastic; pyriform nucleus connected with the blepharoplast of flagella; spherical cysts uninucleate; fresh water or coprozoic. (ref. ID; 1618)

[ref. ID; 4714]
The genus Cercomonas Dujardin (syn. Cercobodo Krassilschik) includes colourless flagellates having two heterodynamic flagella and a single nucleus. They regularly form pseudopodia which serve for locomotion and food ingestion. Unlike the amoebo-flagellates of the order Schizopyrenida, the representatives of Cercomonas do not shed their flagella during the amoeboid stage and do not form pseudopodia of the "limax" type. (ref. ID; 4714)

Cercomonas crassicauda Dujardin (ref. ID; 1618)
Description; In fresh water and coprozoic. (ref. ID; 1618)
Measurements; 10-16 by 7-10 um. (ref. ID; 1618)
Cercomonas longicauda Dujardin (ref. ID; 1618)
Description; Pyriform or ovoid; posterior end drawn out; pseudopodia; fresh water and coprozoic. (ref. ID; 1618)
Measurements; Body 18-36 by 9-14 um; flagella as long as body. (ref. ID; 1618)