Concise hierarchy

(Kingdom) Animalia - (Phylum) Arthropoda - (Class) Arachnida

Current position

Serikodiastida ([unranked]) Garwood & Dunlop, 2014

Ref: Garwood & Dunlop, 2014: 24 [new position]

Alternative positions

Arachnida (Class) Lamarck, 1801	Ref: Z.-Q. Zhang, 2013: 19.
Arachnida (Subclass) Lamarck	Ref: R.C. Brusca & G.J. Brusca, 1990: 495.
Arachnina (Subclass)	Ref: J. Hallan, 2003-present: 7 Mar 2005.
Micrura (Subclass)	Ref: D. Grimaldi & M.S. Engel, 2005: table 3.2.
Tetrapulmonata ([unranked]) Shultz, 1990	Ref: J.W. Shultz, 2007: fig. 1.

Historical positions

Chelicerata (Subphylum) Heymons, 1901	Ref: J.A. Dunlop et al., 2020: 134.
Euchelicerata ([unranked]) Weygoldt & Paulus, 1979	Ref: C. Aria et al., 2020: fig. S4. [implicit]
N.N. (Superorder)	Ref: M.A. Ruggiero et al., 2015b: 36.
Arachnida (Class) Lamarck, 1801	Ref: Z.-Q. Zhang, 2013: 19.
Pantetrapulmonata ([unranked]) Shultz, 2007	Ref: J.A. Dunlop et al., 2012: 123. [inferred rank]
Arachnida (Class) Lamarck, 1801	Ref: Z.-Q. Zhang, 2011: 99.
Arachnida (Class) Lamarck, 1801	Ref: E.J. van Nieukerken, 2010: 159.
Micrura (Subclass)	Ref: D. Grimaldi & M.S. Engel, 2005: 102-103, table 3.2.
Tetrapulmonata ([unranked]) Shultz, 1990	Ref: J.A. Coddington et al., 2004: 302-305, figs. 18.1, 18.3.
Arachnina (Subclass)	Ref: J. Hallan, [2003]: 7 Mar 2005.
Arachnida (Subclass) Lamarck	Ref: R.C. Brusca & G.J. Brusca, 1990: 495.
Arachnida (Class) Lamarck, 1801	Ref: R.C. van Caenegem et al., 1979-1984
Arachnida (Class) Lamarck, 1801	Ref: H.W. Levi, 1982: 77-78.
Arachnida (Class) Lamarck, 1801	Ref: T.I. Storer et al., 1979: 537.
Arachnida (Class) Lamarck, 1801	Ref: B. Grzimek, 1973-1975

Number of Subtaxa

2024	Available in Systema Naturae 2000	112f;3746g;21,700s;681ss;1v; †5g
1989-present	Systema Naturae 2000	110f;~3500g;>38,000s; †~600s
2013	Z.-Q. Zhang: 19	44,863*[43,678]s; †1,185s
2013	N.I. Platnick: 13 Dec 2012	112f;3898g;43,678s
2012	J.A. Dunlop et al.: 123, 182	42,473s; †1141[1121]s
2012	J.A. Dunlop et al.: 123, 182 (Platnick, 2011)	42,473s; †1141[1121]s
2011	Z.-Q. Zhang: 99	43,579*[42,473]s; †1,106s
2011	N.I. Platnick: 21 Jun 2011	110f;3849g;42,473s
2011	N.I. Platnick: 29 Dec 2010	110f;3821g;42,055s
2009	N.I. Platnick: 5 Jul 2009	109f;3747g;40,998s
2009	N.I. Platnick: 5 Jul 2009	[109f];3747g;40,998s
2004	J.A. Coddington et al.: 302	110f;~3500g;>38,000s; †~600s
[2003]	J. Hallan	3598g;38,274s; †118g;216s
2000		15s
1990	R.C. Brusca & G.J. Brusca	~35,000s
1982	H.W. Levi	3so[87f]35,000s
1979	T.I. Storer et al.	61f~32,000s