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Monophyletic taxon: Subphylum Haptophytina Caval.-Sm. (2015) (alga)
 Entity: 

Concise hierarchy

(Kingdom) Chromista - (Phylum) Haptista

Defined by included taxon (and all taxa more closely related to it than to the excluded taxon)

Coccolithophyceae (Class) Rothm. (1951) Ref: T. Cavalier-Smith et al., 2015: 348.

Defined by excluded taxon

Cryptophyceae (Class) F.E. Fritsch (1927) Ref: T. Cavalier-Smith et al., 2015: 348.

Original position

Haptista (Phylum) Cavalier-Smith, 2003 Ref: T. Cavalier-Smith et al., 2015: table 1 (p. 344).

Original entries

Coccolithophyceae (Class) Rothm. (1951) Ref: T. Cavalier-Smith et al., 2015: table 1 (p. 344).
Pavlovophyceae (Class) J.C. Green & Medlin (2000) Ref: T. Cavalier-Smith et al., 2015: table 1 (p. 344).
Rappephyceae (Class) Caval.-Sm. (2015) Ref: T. Cavalier-Smith et al., 2015: table 1 (p. 344).

Current position

Haptista (Phylum) Cavalier-Smith, 2003 Ref: T. Cavalier-Smith, 2022(2021): 514.

Historical positions

Haptista (Phylum) Cavalier-Smith, 2003 Ref: T. Cavalier-Smith, 2022(2021): 514.
Haptista (Phylum) Cavalier-Smith, 2003 Ref: T. Cavalier-Smith et al., 2015: 348, table 1 (p. 344). [new rank]

Number of Subtaxa

2024 Available in Systema Naturae 2000 3c;11o;23f;47g;53s;6v; †5o;28f;137g;46s
1989-present Systema Naturae 2000: 17 Sep 2015 [3c]
2015 T. Cavalier-Smith et al.: table 1 (p. 344) [3c]
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Last updated: 1 Feb 2024