Concise hierarchy

(Kingdom) Chromista - (Phylum) Cercozoa - (Class) Thecofilosea

Subsequent positions

Ebridea (Class) Lemmermann, 1901

Ref: T. Cavalier-Smith, 1993b: table 4 (p. 970).

Current position

Eothecia (Subclass)

Ref: M.A. Ruggiero et al., 2015b: table 2 (p. 20).

Alternative positions

Ebridea (Class) Lemmermann, 1901	Ref: T. Cavalier-Smith, 1995: table (p. 1013).
Phytomastigophorea (Subclass)	Ref: T.I. Storer et al., 1979: 355.
Thecofilosea (Class) T. Cavalier-Smith & E.E.-Y. Chao, 2003	Ref: S. Ota, 2011: 2. [inferred rank]
Zoomastigophora (Class)	Ref: K. Vickerman, 1982: 508. [invalid/synonym]

Historical positions

Eothecia (Subclass)	Ref: M.A. Ruggiero et al., 2015b: table 2 (p. 20).
Thecofilosea (Class) T. Cavalier-Smith & E.E.-Y. Chao, 2003	Ref: A.T. Howe et al., 2011: abstract.
Ebridea (Class) Lemmermann, 1901	Ref: T. Cavalier-Smith, 1995: table (p. 1013).
Ebridea (Class) Lemmermann, 1901	Ref: T. Cavalier-Smith, 1993b: table 4 (p. 970). [new position]
Zoomastigophora (Class)	Ref: J.O. Corliss, 1982: 508. [invalid/synonym]
Phytomastigophorea (Subclass)	Ref: T.I. Storer et al., 1979: 355.

Number of Subtaxa

2024	Available in Systema Naturae 2000	1f;2g;2s
1989-present	Systema Naturae 2000	[1f;2g;2s]
2011	S. Ota: 2	[1f]