Concise hierarchy

(Kingdom) Protozoa - (Phylum) Choanozoa

Phylogeny

Paraphyletic/Ancestral (para)		Ref: T. Cavalier-Smith, 2013(2012): 160 ("and their animal descendants"). [implicit]
Probably Paraphyletic/Ancestral (para)		Ref: T. Cavalier-Smith, 2022(2021): table 1 (p. 521: "*").

Descendants

Animalia (Kingdom) Linnaeus, 1758

Ref: T. Cavalier-Smith, 2013(2012): 160.

Original position

Choanozoa (Phylum) Cavalier-Smith, 1981

Ref: T. Cavalier-Smith, 2009: 27.

Original entries

Choanoflagellatea (Class) Cavalier-Smith, 1998		Ref: T. Cavalier-Smith, 2009: 27.
Filasterea (Class) Cavalier-Smith, 2008		Ref: T. Cavalier-Smith, 2009: 27.
Ichthyosporea (Class) Cavalier-Smith, 1998		Ref: T. Cavalier-Smith, 2009: 27.

Current position

Choanozoa (Phylum) Cavalier-Smith, 1981

Ref: T. Cavalier-Smith, 2022(2021): table 1 (p. 521).

Historical positions

Choanozoa (Phylum) Cavalier-Smith, 1981	Ref: T. Cavalier-Smith, 2022(2021): table 1 (p. 521).
Choanozoa (Phylum) Cavalier-Smith, 1981	Ref: T. Cavalier-Smith, 2013(2012): table 7 (p. 155); 156, 160.

Number of Subtaxa

2024	Available in Systema Naturae 2000	3c;6o;16f;86g;115s;1v;2
1989-present	Systema Naturae 2000: 22 Dec 2023	[3c;6o;16f]
2022(2021)	T. Cavalier-Smith: table 1 (p. 521)	3c
2013(2012)	T. Cavalier-Smith: table 7 (p. 155)	[4c;6o;13f]