Concise hierarchy

(Kingdom) Animalia

Current position

Nematoida ([unranked]) Rudolphi, 1808

Ref: E.J. van Nieukerken, 2010: 152.

Alternative positions

Animalia (Kingdom) Linnaeus, 1758	Ref: Z.-Q. Zhang, 2013: 8.
Aschelminthes (Superphylum)	Ref: M.J. Costello et al., 2001: 161. [indirect]
Aschelminthes ([unranked]) Grobben, 1910
Cycloneuralia ([unranked]) Nielsen, 1995	Ref: J. Bergström & X.-G. Hou, 2003: fig. 10. [inferred rank]
Ecdysozoa (Superphylum) Aguinaldo, Turbeville, Linford, Rivera, Garey, Raff & Lake, 1997	Ref: M.A. Ruggiero et al., 2015b: table 2 (p. 41).
Introverta ([unranked]) Nielsen, 1995	Ref: C. Nielsen, 2001: fig. 1.2.
Metazoa (Kingdom) Haeckel, 1874
Nematelminthes (Midphylum)	Ref: E. Möhn, 1984
Pseudocoelomata (Section)	Ref: T.I. Storer et al., 1979: 321.
Pseudocoelomata ([unranked])	Ref: L. Margulis & K.V. Schwartz, 1998: 242-243.
Pseudocoelomates ([unranked]) Hyman, 1951	Ref: R.C. Brusca & G.J. Brusca, 1990: 48.

Historical positions

Animalia (Kingdom) Linnaeus, 1758	Ref: T. Rees et al., 2020: table 2 (p. 131).
Ecdysozoa (Clade) Aguinaldo, Turbeville, Linford, Rivera, Garey, Raff & Lake 1997, nom. cl. inval.	Ref: C. Aria et al., 2020: fig. S4. [indirect]
Ecdysozoa (Superphylum) Aguinaldo, Turbeville, Linford, Rivera, Garey, Raff & Lake, 1997	Ref: M.A. Ruggiero et al., 2015b: table 2 (p. 41).
Nematoida ([unranked]) Rudolphi, 1808	Ref: M.J. Benton, 2015: fig. 1.6 (G. Edgecombe). [out of scope (coherent)]
Animalia (Kingdom) Linnaeus, 1758	Ref: Z.-Q. Zhang, 2013: 8.
Animalia (Kingdom) Linnaeus, 1758	Ref: M. Hodda, 2011: 63; 10.
Nematoida ([unranked]) Rudolphi, 1808	Ref: E.J. van Nieukerken, 2010: 152.
Nematoida ([unranked]) Rudolphi, 1808	Ref: D. Grimaldi & M.S. Engel, 2005: table 3.1.
Nematoida ([unranked]) Rudolphi, 1808	Ref: E.E. Ruppert et al., 2004: 757-770, figs. 9.26B, 22.35.
Cycloneuralia ([unranked]) Nielsen, 1995	Ref: J. Bergström & X.-G. Hou, 2003: fig. 10; fig. 11.
fossil marine animal genera (Kingdom) Linnaeus, 1758	Ref: J.J. Sepkoski Jr., 2002: 69.
Nematoida ([unranked]) Rudolphi, 1808	Ref: K.J. Peterson & D.J. Eernisse, 2001: 172, [176]; 202.
Introverta ([unranked]) Nielsen, 1995	Ref: C. Nielsen, 2001: 335-346, fig. 1.2.
organisms ([unranked])	Ref: M.J. Costello et al., 2001: 161.
Nematoida ([unranked]) Rudolphi, 1808	Ref: G. Giribet et al., 2000: 551, tab. 2, fig. 4; tab. 1.
Animalia (Kingdom) Linnaeus, 1758	Ref: 1998
Pseudocoelomata ([unranked])	Ref: L. Margulis & K.V. Schwartz, 1998: 242-243.
Animalia (Kingdom) Linnaeus, 1758	Ref: 1995
Introverta ([unranked]) Nielsen, 1995	Ref: C. Nielsen, 1995
Animalia (Kingdom) Linnaeus, 1758	Ref: R.C. Brusca & G.J. Brusca, 1990: 349-358; 4.
Pseudocoelomates ([unranked]) Hyman, 1951	Ref: R.C. Brusca & G.J. Brusca, 1990: 48. [alternative position]
Animalia (Kingdom) Linnaeus, 1758	Ref: R.S. Boardman et al., 1987
Nematelminthes (Midphylum)	Ref: E. Möhn, 1984
Pseudocoelomata ([unranked])	Ref: L. Margulis & K.V. Schwartz, 1982: 196-197.
Pseudocoelomata (Section)	Ref: T.I. Storer et al., 1979: 321.

Number of Subtaxa

2024	Available in Systema Naturae 2000	3c;31o;266f;699g;886s;6ss; †2g;1s
1989-present	Systema Naturae 2000: 11 May 2018	[3c;31o;266f]
2020	T. Rees et al.: table 2 (p. 131)	5,451*ng;3,163[-3,323]*g; †3.2%g
2015b	M.A. Ruggiero et al.: table 2 (p. 42)	[3c;31o]
2013	Z.-Q. Zhang: 8	25,043*[25,033]s; †10s
2011	Z.-Q. Zhang: 10	24,783[24,773]s; †10s
2011	M. Hodda: 63 (footnote 1)	3c;31o;267[266]f;2829g;24,783[24,773]s; †7g;7[17]s
2002	J.J. Sepkoski Jr.: 69	[; †1g]
2000	M.R. Siddiqi	>1,960g;>12,000s; †5g
1995	C. Nielsen	20,000s
1995	C. Nielsen	~20,000s
1990	R.C. Brusca & G.J. Brusca	2c;>12,000s
1982	L. Margulis & K.V. Schwartz	2c80,000s