Concise hierarchy

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

Included, by definition, in node-based clade

Monotremata (Clade) Bonaparte 1837 [Rowe 1988]

Ref: T. Rowe, 1988: 247.

Subsequent positions

Platypoda (Order) Gill, 1872

Original entries

Questionably †Monotrematum (Genus) Pascual, Archer, Ortiz Jaureguizar, Prado, Godthelp & Hand, 1992
Questionably †Obdurodon (Genus) Woodburne & Tedford, 1975
Questionably †Steropodon (Genus) Archer, Flannery, Ritchie & Molnar, 1985

Subsequent entries

Dermipus (Genus) Wiedemann, 1800
Ornithorhynchus (Genus) Blumenbach, 1800
Platypus (Genus) Shaw, 1799, nom. illeg.

Current position

Monotremata (Order) Bonaparte, 1837

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

Alternative positions

Platypoda (Order) Gill, 1872

Ref: M.C. McKenna & S.K. Bell, 1997: 35.

Historical positions

Monotremata (Order) Bonaparte, 1837	Ref: C.J. Burgin et al., 2020: table 2 (p. 26).
Monotremata (Order) Bonaparte, 1837	Ref: D.E. Wilson & D.M. Reeder, 2011: 56.
Monotremata (Order) Bonaparte, 1837	Ref: C.P. Groves, 2005: 2.
Monotremata (Order) Bonaparte, 1837	Ref: Z. Kielan-Jaworowska et al., 2004 (alt.): table 1.1 (p. 14).
Platypoda (Order) Gill, 1872	Ref: M.C. McKenna & S.K. Bell, 1997: 35.
Monotremata (Order) Bonaparte, 1837	Ref: 1995
Monotremata (Order) Bonaparte, 1837	Ref: C.P. Groves, 1993: 13; 4.
Monotremata (Order) Bonaparte, 1837	Ref: G.B. Corbet & J.E. Hill, 1991: 9.
Monotremata (Order) Bonaparte, 1837	Ref: R.M. Nowak, 1991: 6.
Monotremata (Order) Bonaparte, 1837	Ref: R.L. Carroll, 1988: 627.
Monotremata (Order) Bonaparte, 1837	Ref: A.F. DeBlase, 1982: 1015-1016.
Monotremata (Order) Bonaparte, 1837	Ref: W. Fiedler et al., 1973: [609].

Number of Subtaxa

2024	Available in Systema Naturae 2000	1g;1s; †2g;2s
1989-present	Systema Naturae 2000: 6 Mar 2022	[1g;1s; †2g]
2011	D.E. Wilson & D.M. Reeder: 56	1g;1s
2005	C.P. Groves	[1g;1s;0ss]
1997	M.C. McKenna & S.K. Bell	[1g; †3g]
1993	C.P. Groves	1g;1s
1991	R.M. Nowak	1g;1s
1991	G.B. Corbet & J.E. Hill	[1g];1s
1982	A.F. DeBlase	1g;1s
1973	W. Fiedler et al.	1g;1s;4ss