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Under construction
Crown clade: Clade Theria Parker & Haswell 1897 [McKenna 1975] (mammal)
 Entity: 

Concise hierarchy

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

Current position

Boreosphenida (Subclass) Luo, Cifelli & Kielan-Jaworowska, 2001 Ref: M.J. Benton, 2015: 443. [inferred rank] [implicit]

Alternative positions

Mammalia (Clade) Linnaeus 1758 [Rowe 2020] Ref: É.V. Oliveira et al., 2021: fig. 6.
Mammalia (Clade) Linnaeus 1758 [Rowe 1988], nom. cl. inval. Ref: M.A. O'Leary et al., 2004: fig. 28.2.
Theriiformes (Clade) Rowe 1988 Ref: T. Rowe, 1988: 251.
Theriimorpha (Clade) Rowe 1993 Ref: M.A. O'Leary et al., 2013: table S4 (p. 100).

Historical positions

Mammalia (Clade) Linnaeus 1758 [Rowe 2020] Ref: É.V. Oliveira et al., 2021: fig. 6.
Mammalia (Clade) Linnaeus 1758 [Rowe 2020] Ref: K. de Queiroz et al., 2020: x. [unofficial]
Theriimorpha (Clade) Rowe 1993 Ref: M.A. O'Leary et al., 2013: table S4 (p. 100).
Mammalia (Clade) Linnaeus 1758 [Rowe 1988], nom. cl. inval. Ref: M.A. O'Leary et al., 2004: fig. 28.2.
Theriiformes (Clade) Rowe 1988 Ref: T. Rowe, 1988: 251, figs. 3, 4.

Phylogeny

Crown clade Ref: M.A. O'Leary et al., 2013: table S4 (p. 100: "Node-based crown clade").

First representative

Sinodelphys szalayi Z.-X. Luo et al., 2003 Ref: M.A. O'Leary et al., 2013: table S2 (p. 85)

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

Marsupialia (Clade) Jameson 1818 [O'Leary, Allard, Novacek, Meng & Gatesy 2004] Ref: T. Rowe, 1988: 247, 251 ("marsupials")
Placentalia (Clade) Owen 1837 [O'Leary, Allard, Novacek, Meng & Gatesy 2004] Ref: T. Rowe, 1988: 247, 251 ("placentals")

Included, by definition, in node-based clade

Cladotheria (Clade) McKenna 1975 Ref: Z. Kielan-Jaworowska et al., 2004: table 1.1 (p. 14: "Crown Theria")
Holotheria (Clade) Wible, Rougier, Novacek, McKenna & Dashzeveg 1995 Ref: J.R. Wible et al., 1995: 10 ("therians")
Mammalia (Clade) Linnaeus 1758 [Rowe 1988], nom. cl. inval. Ref: T. Rowe, 1988: 247
Prototribosphenida (Clade) Wible, Rougier, Novacek, McKenna & Dashzeveg 1995 Ref: J.R. Wible et al., 1995: 9
Prototribosphenida (Clade) Wible, Rougier, Novacek, McKenna & Dashzeveg 1995 Ref: Z.-X. Luo et al., 2002: 28 ("living therians")
Theriiformes (Clade) Rowe 1988 Ref: T. Rowe, 1988: 251 [Rowe, 1986a]
Trechnotheria (Clade) McKenna 1975 Ref: Z. Kielan-Jaworowska et al., 2004: table 1.1 (p. 14: "Crown Theria")
Trechnotheria (Clade) McKenna 1975 Ref: Z.-X. Luo et al., 2002: 26 ("crown Theria")

Included, by definition, in branch-based clade

Theriimorpha (Clade) Rowe 1993 Ref: T. Rowe, 1993: 139 ("therians")

Excluded, by qualifying clause, from node-based clade

Yinotheria (Clade) Chow & Rich 1982 [Kielan-Jaworowska, Cifelli & Luo 2004] Ref: Z. Kielan-Jaworowska et al., 2004: 204 ("therians")

Node-based clade

Theria (Clade) Parker & Haswell 1897 [McKenna 1975] Ref: M.A. O'Leary et al., 2004: 494
Theria (Supercohort) Parker & Haswell, 1897 Ref: M.C. McKenna & S.K. Bell, 1997: 49 (note 1)

Number of Subtaxa

1989-present Systema Naturae 2000 [26o;135f; ‡1o;10f;52g; †30o;282f;4280g]
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Last updated: 4 Aug 2022