Concise hierarchy

(Kingdom) Animalia - (Phylum) Chordata

Phylogeny

Paraphyletic/Ancestral (para)

Ref: R.L. Carroll, 1988: [16].

Current position

Tetrapoda (Clade) Hatschek & Cori 1896 [Laurin 2020]

Ref: M.A. Ruggiero et al., 2015b: table 2 (p. 50). [implicit]

Alternative positions

Neotetrapoda ([unranked]) Gaffney, 1979	Ref: M.A. Ruggiero et al., 2015b: table 2 (p. 50). [indirect]
Pentadactyla branchiata ([unranked])	Ref: E.R. Lankester, 1877: 450.
Pisces (Superclass) Linnaeus, 1758	Ref: L.B. Halstead, 1974: 171.
Tetrapoda (Superclass) Goodrich, 1930	Ref: M.A. Ruggiero et al., 2015b: table 2 (p. 50).
Tetrapoda (Clade) Hatschek & Cori 1896 [Gauthier, Kluge & Rowe 1988], nom. cl. inval.	Ref: M.A. Ruggiero et al., 2015b: table 2 (p. 50). [implicit]
Vertebrata (Subphylum) Cuvier, 1812	Ref: A.S. Romer & T.S. Parsons, 1986: App. 1 (p. 622).

Historical positions

Chordata (Phylum) Bateson, 1885	Ref: T. Rees et al., 2020: table 2 (p. 131).
Tetrapoda (Superclass) Goodrich, 1930	Ref: M.A. Ruggiero et al., 2015b: table 2 (p. 50).
ectothermic vertebrates ([unranked]) Lamarck, 1801	Ref: M. Böhme, 2010: 10.
Chordata ([unranked]) Bateson, 1885	Ref: J.J. Sepkoski Jr., 2002: 318.
Tetrapoda (Clade) Hatschek & Cori 1896 [Gauthier, Kluge & Rowe 1988], nom. cl. inval.	Ref: R.L. Carroll, 1988: 612; fig. 1.3.
Tetrapoda (Superclass) Goodrich, 1930	Ref: T.I. Storer et al., 1979: 327, [690]-715.
†Crossopterygii (Order) Huxley, 1861	Ref: T.I. Storer et al., 1979: 680. [phylogenetic position] [implicit]
Pisces (Superclass) Linnaeus, 1758	Ref: L.B. Halstead, 1974: 171.
Pentadactyla branchiata ([unranked])	Ref: E.R. Lankester, 1877: 450.

Number of Subtaxa

2025	Available in Systema Naturae 2000	3o;61f;525g;6661s;70ss; ‡4s; †4o;41f;48g;13s
1989-present	Systema Naturae 2000: 23 Feb 2014	[3o;61f;526g;6642s]
2020	T. Rees et al.: table 2 (p. 131)	2,334*ng;739[-1,844]*g; †21.1%g
1988	R.L. Carroll: 615	[3o;27f; †8o;80f]
1979	T.I. Storer et al.: 709	>3,400s
1972	O. Kuhn: 68	[3o; †9o]
1877	E.R. Lankester: 452	[4o]