Concise hierarchy

(Kingdom) Chromista - (Phylum) Haptista - (Class) Coccolithophyceae

Subsequent positions

Patelliferea (Class) Caval.-Sm. (1993)		Ref: T. Cavalier-Smith, 1993b: table 2 (p. 961).
Prymnesidae (Subclass) Caval.-Sm. (1986)		Ref: T. Cavalier-Smith, 1986: 343.

Current position

Coccolithophyceae (Class) Rothm. (1951)

Ref: S.M. Adl et al., 2012: table 2 (p. 485). [inferred rank] [indirect]

Alternative positions

Chrysophyceae (Class) Fritsch (1927)	Ref: 2003
Haptophyceae (Class) Christensen ex Silva (1980)	Ref: L.J. Audus & V. Heywood, 1981
Patelliferea (Class) Caval.-Sm. (1993)	Ref: T. Cavalier-Smith, 1995: table (p. 1014).
Prymnesiophyceae (Class) D.J. Hibberd (1976)	Ref: S.M. Adl et al., 2005: 424. [inferred rank]
Prymnesiophycidae (Subclass) (D.J. Hibberd) Cavalier-Sm. (1986)	Ref: S.P. Parker, 1982 [indirect]

Historical positions

Prymnesiophyceae (Class) D.J. Hibberd (1976)	Ref: S.M. Adl et al., 2005: 424.
Patelliferea (Class) Caval.-Sm. (1993)	Ref: T. Cavalier-Smith, 1995: table (p. 1014).
Patelliferea (Class) Caval.-Sm. (1993)	Ref: T. Cavalier-Smith, 1993b: table 2 (p. 961). [new position]
Prymnesiophyceae (Class) D.J. Hibberd (1976)	Ref: R.E. Norris, 1982: 90.

Number of Subtaxa

2024	Available in Systema Naturae 2000	1f;3g;7s
1989-present	Systema Naturae 2000	[1f]
1982	S.P. Parker	2f;50s
1982	S.P. Parker	2f;50s
1982	R.E. Norris	2f50s