Concise hierarchy

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

Original position

Questionably †Chalicotherioidea (Superfamily) Gill, 1872

Original entries

Questionably †Chalicotheriinae (Subfamily) Gill, 1872
Questionably †Schizotheriinae (Subfamily) Holland & Peterson, 1914

Current position

†Chalicotherioidea (Superfamily) Gill, 1872

Ref: M.C. McKenna & S.K. Bell, 1997: 477.

Alternative positions

†Ancylopoda (Suborder) Cope, 1889	Ref: R.L. Carroll, 1988: 644.
Tapiromorpha (Suborder) Haeckel, 1866	Ref: M.J. Benton, 2015: 445.

Historical positions

Tapiromorpha (Suborder) Haeckel, 1866	Ref: M.J. Benton, 2015: 445.
Tapiromorpha (Suborder) Haeckel, 1866	Ref: M.J. Benton, 2005: 402.
†Chalicotherioidea (Superfamily) Gill, 1872	Ref: M.C. McKenna & S.K. Bell, 1997: 477.
Perissodactyla (Order) Owen, 1848	Ref: 1995
†Ancylopoda (Suborder) Cope, 1889	Ref: R.L. Carroll, 1988: 644.
†Ancylopoda (Suborder) Cope, 1889	Ref: B. Grzimek, 1973-1975
†Ancylopoda (Suborder) Cope, 1889	Ref: G.G. Simpson, 1945

Number of Subtaxa

2024	Available in Systema Naturae 2000	†9g;1s
1989-present	Systema Naturae 2000	[; †9g]
1997	M.C. McKenna & S.K. Bell	[; †9g]