Concise hierarchy

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

Subsequent positions

†Meridiungulata (Mirorder) McKenna, 1975

Original entries

Questionably †Archaeotypotherium (Genus) Roth, 1903, nom. dub.
Questionably †Epitypotherium (Genus) Ameghino, 1904
Questionably †Hegetotheria (Suborder) Simpson, 1945
Questionably †Isotypotherium (Genus) Ameghino, 1904, nom. dub.
Questionably †Notioprogonia (Suborder) Simpson, 1934
Questionably †Procolpodon (Genus) Ameghino, 1904, nom. dub.
Questionably †Pyralophodon (Genus) Ameghino, 1904

Subsequent entries

†Acoelodidae (Family) Ameghino, 1901
†Acoelodus (Genus) Ameghino, 1897
†Carolodarwinia (Genus) Ameghino, 1901, nom. dub.
†Lophiodonticulus (Genus) Ameghino, 1902, nom. dub.
†Loxocoelus (Genus) Ameghino, 1895
†Orthogeniops (Genus) Ameghino, 1902, nom. dub.
†Ortholophodon (Genus) Roth, 1902, nom. dub.
†Pleurystylops (Genus) Ameghino, 1901, nom. dub.
†Pyramidon (Genus) Roth, 1901, nom. dub.
†Senodon (Genus) Ameghino, 1895
†Tonostylops (Genus) Ameghino, 1902, nom. dub.
†Toxodonta (Suborder) Haeckel, 1866
†Toxodontia (Suborder) Owen, 1853
†Typotheria (Suborder) Zittel, 1892

Current position

†Meridiungulata (Grandorder) McKenna, 1975

Ref: M.J. Benton, 1997: App. (p. 402).

Alternative positions

Eutheria (Infraclass) Gill, 1872	Ref: R.L. Carroll, 1988: 646.
†Meridiungulata (Mirorder) McKenna, 1975	Ref: M.C. McKenna & S.K. Bell, 1997: 455.
†Meridiungulata (Superorder) McKenna, 1975	Ref: M.J. Benton, 2015: 444.
Protungulata (Superorder)	Ref: G.G. Simpson, 1945
Ungulatomorpha (Superorder) Archibald, 1996	Ref: Z. Kielan-Jaworowska et al., 2004 (alt.): table 1.1 (p. 15).

Historical positions

†Meridiungulata (Superorder) McKenna, 1975	Ref: M.J. Benton, 2015: 444.
†Meridiungulata (Superorder) McKenna, 1975	Ref: M.J. Benton, 2005: 402.
Ungulatomorpha (Superorder) Archibald, 1996	Ref: Z. Kielan-Jaworowska et al., 2004 (alt.): table 1.1 (p. 15).
Ungulatomorpha (Superorder) Archibald, 1996	Ref: Z. Kielan-Jaworowska et al., 2004: tables 1.2 (p. [17]), 13.1 (p. 495).
†Meridiungulata (Mirorder) McKenna, 1975	Ref: M.C. McKenna & S.K. Bell, 1997: 455.
Mammalia (Class) Linnaeus, 1758	Ref: 1995
Eutheria (Infraclass) Gill, 1872	Ref: R.L. Carroll, 1988: 646.
Eutheria (Infraclass) Gill, 1872	Ref: A.S. Romer & T.S. Parsons, 1986
Eutheria (Infraclass) Gill, 1872	Ref: T.I. Storer et al., 1979
Protungulata (Superorder)	Ref: R. Altevogt et al., 1973 (1972): 699.
Protungulata (Superorder)	Ref: G.G. Simpson, 1945

Number of Subtaxa

2024	Available in Systema Naturae 2000	†15f;169g;5s
1989-present	Systema Naturae 2000	[; †14f;167g]
1997	M.C. McKenna & S.K. Bell	[; †14f;167g]
1988	R.L. Carroll: 647	[; †14f]