Concise hierarchy

(Kingdom) Chromista - (Phylum) Bigyra - (Class) Bikosea - (Order) Anoecida

Subsequent positions

Heteromitea (Class) Cavalier-Smith, 1993

Ref: T. Cavalier-Smith, 1993b: 989.

Current position

Caecitellidae (Family) Cavalier-Smith, 2006

Ref: T. Cavalier-Smith & J.M. Scoble, 2013(2012): table 1 (p. 333).

Alternative positions

Bicosoecales (Order) Grassé (1926)	Ref: 2000
eukaryotes ([unranked])	Ref: D.J. Patterson, 1999: S103.
hamatores ([unranked]) incertae sedis
Heteromitea (Class) Cavalier-Smith, 1993	Ref: T. Cavalier-Smith, 1993b: 989. [new position]
Siluaniaceae (Family) Karpov (1998)	Ref: J. Kristiansen & H.R. Preisig, 2001: 11.
Siluaniidae (Family) Karpov, 1998	Ref: J. Kristiansen & H.R. Preisig, 2001: 11. [alternative position]

Historical positions

Caecitellidae (Family) Cavalier-Smith, 2006	Ref: T. Cavalier-Smith & J.M. Scoble, 2013(2012): table 1 (p. 333).
Bicosoecida ([unranked]) Grassé, 1926, orth. zool.	Ref: S.M. Adl et al., 2012: table 2 (p. 454). [rough position]
Bicoecea (Class) Caval.-Sm. (1986)	Ref: T. Cavalier-Smith, 2004: table 4.1 (p. 77). [rough position]
Siluaniaceae (Family) Karpov (1998)	Ref: J. Kristiansen & H.R. Preisig, 2001: 11.
residual free-living and predatory heterotrophic flagellates ([unranked])	Ref: D.J. Patterson et al., 2000: 1310.
eukaryotes ([unranked])	Ref: D.J. Patterson, 1999: S103.
Heteromitea (Class) Cavalier-Smith, 1993	Ref: T. Cavalier-Smith, 1993b: 989. [new position]

Number of Subtaxa

2024	Available in Systema Naturae 2000	3s
1989-present	Systema Naturae 2000	[3s]
2000	D.J. Patterson et al.: 1310	1s
2000	D.J. Patterson et al.: 1310	1s
1999	D.J. Patterson: S103	1s