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Monotypic taxon: Family †Holoclemensiidae Aplin & Archer, 1987 (mammal)
 Entity: 

Concise hierarchy

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

Subsequent positions

Theria (Supercohort) Parker & Haswell, 1897 Ref: M.C. McKenna & S.K. Bell, 1997: 50.

Subsequent entries

†Holoclemensia (Genus) Slaughter, 1968 Ref: Aplin & Archer, 1987 [assumed]

Current position

Theria (Subclass) Parker & Haswell, 1897 Ref: M.C. McKenna & S.K. Bell, 1997: 50; Wang et al., 2021: ext. data fig. 8; Cohen et al., 2020: fig. 7. [implicit]

Alternative positions

Boreosphenida (Subclass) Luo, Cifelli & Kielan-Jaworowska, 2001 Ref: Z. Kielan-Jaworowska et al., 2004: table 11.1 (p. 411).
Metatheria (Infraclass) Huxley, 1880 Ref: Z. Kielan-Jaworowska et al., 2004: table 11.1 (p. 411); Wilson et al., 2016: fig. 3. [indirect]
Theria (Supercohort) Parker & Haswell, 1897 Ref: M.C. McKenna & S.K. Bell, 1997: 50; Wang et al., 2021: ext. data fig. 8; Cohen et al., 2020: fig. 7. [new position]

Historical positions

Boreosphenida (Subclass) Luo, Cifelli & Kielan-Jaworowska, 2001 Ref: Z. Kielan-Jaworowska et al., 2004: table 11.1 (p. 411).
Theria (Supercohort) Parker & Haswell, 1897 Ref: M.C. McKenna & S.K. Bell, 1997: 50. [new position]

Number of Subtaxa

2025 Available in Systema Naturae 2000 †1g;1s
1989-present Systema Naturae 2000: 25 Mar 2022 [; †1g;1s]
2004 Z. Kielan-Jaworowska et al.: table 11.1 (p. 411) [; †1g;1s]
1997 M.C. McKenna & S.K. Bell [; †1g]
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Last updated: 21 Sep 2025