Entity:

Concise hierarchy

Phylogeny

Crown clade

Ref: P.J. Waddell et al., 1999a: 2. [implicit]

*Cetacea* (Order) Brisson, 1762		Ref: P.J. Waddell et al., 1999a: 2. [implicit]
*Hippopotamidae* (Family) Gray, 1821		Ref: P.J. Waddell et al., 1999a: 2. [implicit]

Cetartiodactyla (Order) Montgelard, Catzeflis & Douzery, 1997

Ref: X. Zhou et al., 2012: 160

Cetartiodactyla (Clade) Montgelard, Catzeflis & Douzery 1997

Ref: F.G. Marx et al., 2016: 96; Marx et al., 2016: fig. 4.1.

Cetartiodactyla (Clade) Montgelard, Catzeflis & Douzery 1997

Ref: F.G. Marx et al., 2016: 96, fig. 4.1.

2025	Available in Systema Naturae 2000	†7f;104g;16s
1989-present	Systema Naturae 2000: 17 Aug 2017	[11f;41g;81s; ‡1f;1g; †25f;347g]