Concise hierarchy

(Kingdom) Animalia - (Phylum) Chordata - (Class) Mammalia - (Order) Cetartiodactyla

Included, by definition, in node-based clade

Hippopotamoidea (Clade) Gentry & Hooker 1988 [Boisserie 2007]		Ref: J.-R. Boisserie, 2007: App. 8.1 (p. 118: "including").
Whippomorpha (Clade) Waddell, Okada & Hasegawa 1999		Ref: P.J. Waddell et al., 1999a: 2. [implicit]

Subsequent positions

Suoidea (Superfamily) Gray, 1821

Original entries

Questionably Hippopotaminae (Subfamily) Gray, 1821
Questionably †Kenyapotaminae (Subfamily) Pickford, 1983
Questionably †Trilobophorus (Genus) Gèze, 1985

Current position

Ancodonta (Infraorder) Matthew, 1929

Ref: C.J. Burgin et al., 2020: table 2 (p. 27).

Alternative positions

Artiodactyla (Order) Owen, 1848	Ref: D.E. Wilson & D.M. Reeder, 2011: 59.
Hippopotamoidea (Clade) Gentry & Hooker 1988 [Boisserie 2007]	Ref: E. Weston & J.-R. Boisserie, 2010: 861.
Hippopotamoidea (Superfamily) Gray, 1821	Ref: Orliac et al., 2010: fig. 4
Suiformes (Suborder) Jaeckel, 1911	Ref: M.J. Benton, 2015: 444.
Suoidea (Superfamily) Gray, 1821	Ref: M.C. McKenna & S.K. Bell, 1997: 399.
Whippomorpha (Clade) Waddell, Okada & Hasegawa 1999	Ref: X. Zhou et al., 2012: 160

Historical positions

Ancodonta (Infraorder) Matthew, 1929	Ref: C.J. Burgin et al., 2020: table 2 (p. 27).
Whippomorpha (Clade) Waddell, Okada & Hasegawa 1999	Ref: F.G. Marx et al., 2016: figs. 4.1, 4.3.
Suiformes (Suborder) Jaeckel, 1911	Ref: M.J. Benton, 2015: 444.
Artiodactyla (Order) Owen, 1848	Ref: D.E. Wilson & D.M. Reeder, 2011: 59.
Hippopotamoidea (Clade) Gentry & Hooker 1988 [Boisserie 2007]	Ref: E. Weston & J.-R. Boisserie, 2010: 861.
Suiformes (Suborder) Jaeckel, 1911	Ref: M.J. Benton, 2005: 401.
Artiodactyla (Order) Owen, 1848	Ref: P. Grubb, 2005: 644.
Suoidea (Superfamily) Gray, 1821	Ref: M.C. McKenna & S.K. Bell, 1997: 399.
Artiodactyla (Order) Owen, 1848	Ref: 1995
Artiodactyla (Order) Owen, 1848	Ref: P. Grubb, 1993: 380; 6.
Artiodactyla (Order) Owen, 1848	Ref: G.B. Corbet & J.E. Hill, 1991: 126.
Hippopotamoidea (Superfamily) Gray, 1821	Ref: R.L. Carroll, 1988: 640.
Suiformes (Suborder) Jaeckel, 1911	Ref: S.P. Parker, 1982: 1118. [error]
Suiformes (Suborder) Jaeckel, 1911	Ref: T.I. Storer et al., 1979
Anthracotherioidea (Superfamily) Gill, 1872	Ref: B. Grzimek, 1973-1975
Ancodonta (Infraorder) Matthew, 1929	Ref: G.G. Simpson, 1945

Number of Subtaxa

2024	Available in Systema Naturae 2000	2g;2s;5ss; ‡3s; †1g;10s;4ss
1989-present	Systema Naturae 2000: 17 Jun 2022	[2g;2s;5ss; †1g]
2011	D.E. Wilson & D.M. Reeder: 59	2g;2s
2005	P. Grubb: 645	[2g;2s;5ss; ‡3s]
1997	M.C. McKenna & S.K. Bell	[2g; †2g]
1993	P. Grubb	2g;4[2]s; ‡[2s]
1991	G.B. Corbet & J.E. Hill	[2g;2s]