Concise hierarchy

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

Phylogeny

Node-based clade		Ref: Z. Kielan-Jaworowska et al., 2004: table 1.1 (p. 14: "Dryolestoidea + Crown Theria"). [implicit]
Branch-based clade		Ref: Z. Kielan-Jaworowska et al., 2004: 371 ("stem-based clade").

Defined by the most recent common ancestor (and all its descendants) of

†Dryolestoidea (Superorder) Butler, 1939		Ref: Z. Kielan-Jaworowska et al., 2004: table 1.1 (p. 14).
Theria (Clade) Parker & Haswell 1897 [McKenna 1975]		Ref: Z. Kielan-Jaworowska et al., 2004: table 1.1 (p. 14: "Crown Theria").

Defined by included taxon (and all taxa more closely related to it than to the excluded taxon)

Boreosphenida (Clade) Luo, Cifelli & Kielan-Jaworowska 2001

Ref: Z. Kielan-Jaworowska et al., 2004: 371 ("boreosphenidans").

Defined by excluded taxon

†Spalacotheriidae (Family) Marsh, 1887

Ref: Z. Kielan-Jaworowska et al., 2004: 371.

Generic clade

Cladotheria (Clade) McKenna 1975		Ref: Z. Kielan-Jaworowska et al., 2004: 371.
Cladotheria (Clade) McKenna 1975		Ref: Z. Kielan-Jaworowska et al., 2004: table 1.1 (p. 14).

Current position

Trechnotheria (Clade) McKenna 1975

Ref: Z. Kielan-Jaworowska et al., 2004 (alt.): table 1.1 (p. 14).

Alternative positions

Alethinotheria (Clade) Averianov, Martin & Lopatin 2013

Ref: A.O. Averianov et al., 2013: fig. 2.

Historical positions

Alethinotheria (Clade) Averianov, Martin & Lopatin 2013	Src: A.O. Averianov et al., 2013: 321, fig. 2.
Trechnotheria (Clade) McKenna 1975	Src: Z. Kielan-Jaworowska et al., 2004 (alt.): tables 1.1 (p. 14), 10.1 (p. 379).

Number of Subtaxa

2024	Available in Systema Naturae 2000	26o;163f;1202g;5115s;4347ss;302v; ‡12f;52g;110s;33ss;1v; †38o;318f;4258g;1509s;65ss;1v
1989-present	Systema Naturae 2000	[26o;135f; ‡1o;10f;52g; †34o;295f;4316g]