Concise hierarchy

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

Subsequent positions

Microbiotheria (Superorder) Ameghino, 1889

Ref: M.C. McKenna & S.K. Bell, 1997: 53.

Original entries

Questionably Dromiciops (Genus) Thomas, 1894
Questionably †Eomicrobiotherium (Genus) Marshall, 1982
Questionably †Ideodelphys (Genus) Ameghino, 1902, nom. van.
Questionably †Khasia (Genus) Marshall & de Muizon, 1988
Questionably †Microbiotherium (Genus) Ameghino, 1887
Questionably †Mirandatherium (Genus) Paula Couto, 1952
Questionably †Pitheculus (Genus) Ameghino, 1894

Current position

Microbiotheria (Order) Ameghino, 1889

Ref: C.J. Burgin et al., 2020: table 2 (p. 26).

Alternative positions

Didelphoidea (Suborder) Gray, 1821	Ref: R.L. Carroll, 1988: 628.
Didelphoidea (Superfamily) Gray, 1821
Marsupialia (Order) Jameson, 1818	Ref: R.M. Nowak, 1991: 28.
Marsupicarnivora (Order) Ride, 1964	Ref: A.F. DeBlase, 1982: 1017.
Microbiotheria (Superorder) Ameghino, 1889	Ref: M.C. McKenna & S.K. Bell, 1997: 53. [new position]
Microbiotherioidea (Superfamily)	Ref: [Anonymous], 1989

Historical positions

Microbiotheria (Order) Ameghino, 1889	Ref: C.J. Burgin et al., 2020: table 2 (p. 26).
Microbiotheria (Order) Ameghino, 1889	Ref: D.E. Wilson & D.M. Reeder, 2011: 56.
Microbiotheria (Order) Ameghino, 1889	Ref: A.L. Gardner, 2005: 21.
Microbiotheria (Superorder) Ameghino, 1889	Ref: M.C. McKenna & S.K. Bell, 1997: 53. [new position]
Marsupialia (Order) Jameson, 1818	Ref: 1995
Microbiotheria (Order) Ameghino, 1889	Ref: A.L. Gardner, 1993: 27; 4.
Marsupialia (Order) Jameson, 1818	Ref: G.B. Corbet & J.E. Hill, 1991: 12.
Marsupialia (Order) Jameson, 1818	Ref: R.M. Nowak, 1991: 28.
Didelphoidea (Suborder) Gray, 1821	Ref: R.L. Carroll, 1988: 628.
Marsupicarnivora (Order) Ride, 1964	Ref: A.F. DeBlase, 1982: 1017.

Number of Subtaxa

2024	Available in Systema Naturae 2000	1g;1s; †4g
1989-present	Systema Naturae 2000: 1 Apr 2022	[1g;1s; †4g]
2011	D.E. Wilson & D.M. Reeder: 56	1g;1s
2005	A.L. Gardner	[1g;1s]
1997	M.C. McKenna & S.K. Bell	[1g; †6g]
1993	A.L. Gardner	1g;1s
1991	R.M. Nowak	1g;1s
1991	G.B. Corbet & J.E. Hill	[1g];1s
1982	A.F. DeBlase	1g;1s