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

Tachyglossa (Order) Gill, 1872

Original entries

Questionably Acanthoglossus (Genus) Gervais, 1877
Questionably Bruijnia (Genus) Thomas, 1883
Questionably Bruynia (Genus) Dubois, 1882
Questionably †Megalibgwilia (Genus) Giffiths et al., 1991
Questionably Proechidna (Genus) Gervais, 1877
Questionably Prozaglossus (Genus) Kerbert, 1913
Questionably Zaglossus (Genus) Gill, 1877

Subsequent entries

Echidna (Genus) Cuvier, 1798, nom. illeg.
Echinopus (Genus) Fischer de Waldheim, 1814
Syphomia (Genus) Rafinesque, 1815
Syphonia (Genus) Rafinesque, 1815
Tachyglossus (Genus) Illiger, 1811

Current position

Monotremata (Order) Bonaparte, 1837

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

Alternative positions

Tachyglossa (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: 1.
Monotremata (Order) Bonaparte, 1837	Ref: Z. Kielan-Jaworowska et al., 2004 (alt.): table 1.1 (p. 14).
Tachyglossa (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: 2-4.
Monotremata (Order) Bonaparte, 1837	Ref: R.L. Carroll, 1988: 627.
Monotremata (Order) Bonaparte, 1837	Ref: A.F. DeBlase, 1982: 1016.
Monotremata (Order) Bonaparte, 1837	Ref: W. Fiedler et al., 1973: [609].

Number of Subtaxa

2024	Available in Systema Naturae 2000	2g;4s;9ss
1989-present	Systema Naturae 2000	[2g;4s;9ss]
2011	D.E. Wilson & D.M. Reeder: 56	2g;4s
2005	C.P. Groves	[2g;4s;9ss]
1997	M.C. McKenna & S.K. Bell	[2g]
1993	C.P. Groves	2g;2s
1991	R.M. Nowak	2g;[2s]
1991	G.B. Corbet & J.E. Hill	[2g];2s
1982	A.F. DeBlase	2g;[3s]
1973	W. Fiedler et al.	2g;5s