Concise hierarchy

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

Subsequent positions

Syndactyli (Grandorder) Gill, 1871

Ref: M.C. McKenna & S.K. Bell, 1997: 58.

Original entries

Questionably †Brachalletes (Genus) De Vis, 1883
Questionably †Koalemus (Genus) De Vis, 1889
Questionably †Palorchestidae (Family) Tate, 1948
Questionably Petauridae (Family) Bonaparte, 1838
Questionably Phalangeroidea (Superfamily) Thomas, 1888
Questionably Potoroidae (Family) Gray, 1821
Questionably Pseudocheiridae (Family) Winge, 1893
Questionably †Sthenomerus (Genus) De Vis, 1883
Questionably †Thylacoleonidae (Family) Gill, 1872
Questionably Vombatoidea (Superfamily) Burnett, 1830
Questionably †Wynyardiidae (Family) Osgood, 1921

Subsequent entries

Tarsipedidae (Family) Gervais & Verreaux, 1842

Current position

Australidelphia (Magnorder) Szalay, 1982

Ref: M.J. Benton, 2015: 443; Upham et al., 2019: fig. 4.

Alternative positions

Australidelphia (Clade) Szalay 1982	Ref: É.V. Oliveira et al., 2021: fig. 6; Oliveira et al., 2021: fig. 6. [inferred rank]
Mammalia (Class) Linnaeus, 1758	Ref: C.P. Groves, 1993: 45.
Marsupialia (Superorder) Jameson, 1818	Ref: A.F. DeBlase, 1982: 1019.
Marsupialia (Infraclass) Jameson, 1818	Ref: D.E. Wilson & D.M. Reeder, 2011: 56.
Metatheria (Infraclass) Huxley, 1880	Ref: C.J. Burgin et al., 2020: table 2 (p. 26).
Syndactyli (Grandorder) Gill, 1871	Ref: M.C. McKenna & S.K. Bell, 1997: 58. [new position]

Historical positions

Australidelphia (Clade) Szalay 1982	Ref: É.V. Oliveira et al., 2021: fig. 6.
Metatheria (Infraclass) Huxley, 1880	Ref: C.J. Burgin et al., 2020: table 2 (p. 26).
Australidelphia (Clade) Szalay 1982	Ref: L.M. Carneiro et al., 2018: fig. 5. [inferred rank]
Australidelphia (Magnorder) Szalay, 1982	Ref: M.J. Benton, 2015: 443.
Marsupialia (Infraclass) Jameson, 1818	Ref: D.E. Wilson & D.M. Reeder, 2011: 56.
Australidelphia (Magnorder) Szalay, 1982	Ref: M.J. Benton, 2005: 400.
Theria (Subclass) Parker & Haswell, 1897	Ref: C.P. Groves, 2005: 43. [implicit]
Syndactyli (Grandorder) Gill, 1871	Ref: M.C. McKenna & S.K. Bell, 1997: 58. [new position]
Mammalia (Class) Linnaeus, 1758	Ref: C.P. Groves, 1993: 45; 4.
Marsupialia (Superorder) Jameson, 1818	Ref: A.F. DeBlase, 1982: 1019.

Number of Subtaxa

2025	Available in Systema Naturae 2000	11f;38g;137s;101ss; ‡1g;7s;1ss; †8f;77g;45s;1ss
1989-present	Systema Naturae 2000	11f;38g;137s;101ss; ‡1g;7s;1ss; †8f;77g
2020	C.J. Burgin et al.: table 2 (p. 26)	[11f]
2011	D.E. Wilson & D.M. Reeder: 56	3so;[11f]
2005	C.P. Groves	[11f;38g;137s;101ss; ‡1g;6s;1ss]
1997	M.C. McKenna & S.K. Bell	[8f;34g; †8f;77g]
1993	C.P. Groves	[10f];38[37]g;117[111]s; ‡[1g;6s]
1982	A.F. DeBlase	7f
1977c		7f