Concise hierarchy

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

Original position

Questionably Elephantoidea (Superfamily) Gray, 1821

Original entries

Questionably †Anancus (Genus) Aymard, 1855
Questionably Elephantinae (Subfamily) Gray, 1821
Questionably †Morrillia (Genus) Osborn, 1924
Questionably †Paratetralophodon (Genus) Tassy, 1983
Questionably Stegodontinae (Subfamily) Osborn, 1918
Questionably †Tetralophodon (Genus) Falconer, 1857

Current position

Elephantoidea (Superfamily) Gray, 1821

Ref: M.C. McKenna & S.K. Bell, 1997: 502.

Alternative positions

Elephantiformes (Suborder) (Tassy, 1988)	Ref: M.J. Benton, 2015: 444.
Elephantoidea (Suborder) Osborn, 1921	Ref: N.E. Todd, 2010: 76.
Elephantoidea ([unranked])	Ref: M.P. Ferretti, 2003: fig. 11A.
Euelephantoidea (Suborder)	Ref: R.L. Carroll, 1988: 646.
Proboscidea (Order) Owen, 1859	Ref: C.J. Burgin et al., 2020: table 2 (p. 26).

Historical positions

Proboscidea (Order) Owen, 1859	Ref: C.J. Burgin et al., 2020: table 2 (p. 26).
Elephantiformes (Suborder) (Tassy, 1988)	Ref: M.J. Benton, 2015: 444.
Proboscidea (Order) Owen, 1859	Ref: D.E. Wilson & D.M. Reeder, 2011: 57.
Proboscidea (Order) Owen, 1859	Ref: J.A. van Essen, 2011: viii, 23.
Elephantoidea (Suborder) Osborn, 1921	Ref: N.E. Todd, 2010: 76, table 1.
Proboscidea (Order) Owen, 1859	Ref: A. Virág, 2009: 408.
Proboscidea (Order) Owen, 1859	Ref: J. Shoshani, 2005: 90.
Elephantiformes (Suborder) (Tassy, 1988)	Ref: M.J. Benton, 2005: 400.
Elephantoidea ([unranked])	Ref: M.P. Ferretti, 2003: fig. 11A.
Proboscidea (Order) Owen, 1859	Ref: M.G. Thomas et al., 2000: 2493, 2498.
Elephantoidea (Superfamily) Gray, 1821	Ref: M.C. McKenna & S.K. Bell, 1997: 502.
Proboscidea (Order) Owen, 1859	Ref: D.E. Wilson, 1993: 367; 6.
Proboscidea (Order) Owen, 1859	Ref: G.B. Corbet & J.E. Hill, 1991: 123.
Euelephantoidea (Suborder)	Ref: R.L. Carroll, 1988: 646.
Proboscidea (Order) Owen, 1859	Ref: A.F. DeBlase, 1982: 1055.
Proboscidea (Order) Owen, 1859	Ref: T.I. Storer et al., 1979
†Moeritherioidea (Superfamily)	Ref: B. Grzimek, 1973-1975

Number of Subtaxa

2024	Available in Systema Naturae 2000	2g;2s;5ss; ‡1g;1s;1ss; †3g;44s;14ss
1989-present	Systema Naturae 2000	[2g;2s;5ss; ‡1g;1s;1ss; †3g;44s;14ss]
2011	D.E. Wilson & D.M. Reeder: 57	2g;3s
2010	N.E. Todd: 74, table 1	[2g];43*[2]s;[5ss; ‡1g;1s; †3g;41[40]s;12[5]ss]
2010	N.E. Todd: 74	[2g];43*[2]s;[5ss; ‡1g;1s; †3g;41[40]s;12[5]ss]
2005	J. Shoshani	[2g;3s;3ss]
2003	M.P. Ferretti	[2g; ‡1g; †3g]
1997	M.C. McKenna & S.K. Bell	[2g; ‡2g; †8g]
1993	D.E. Wilson	2g;2s
1991	G.B. Corbet & J.E. Hill	[2g];2s
1982	A.F. DeBlase	2g;[2s]