Entity:

Concise hierarchy

Current position

Zatheria (Clade) McKenna 1975

Ref: Allain et al., 2022: 724

Ref: Z. Kielan-Jaworowska et al., 2004: table 9.2 (p. 345). [implicit]

*Mammalia* (Class) Linnaeus, 1758	Ref: Z. Kielan-Jaworowska et al., 2004 (alt.): table 9.1 (p. 344).
†*Symmetrodontans* (Order) Simpson, 1925	Ref: Z. Kielan-Jaworowska et al., 2004: table 9.2 (p. 345).

2024	Available in Systema Naturae 2000	†1g;2s
1989-present	Systema Naturae 2000: 17 Mar 2022	[; †1g;2s]
2004 (alt.)	Z. Kielan-Jaworowska et al.: table 9.1 (p. 344)	[; †1g]
2004	Z. Kielan-Jaworowska et al.: table 9.2 (p. 345)	[; †1g;2s]