| Comments |
The human-cow divergence is synonymous with the origin of Boreoeutheria. This clade is composed of the clades Euarchontoglires (human) and Laurasiatheria (cow). The oldest members of Euarchontoglires were noted above [see human-mouse split] as the zalambdalestids from Uzbekistan, dated at 90 - 85 Ma (Archibald, Averianov, and Ekdale 2001), although doubt has been expressed about their phylogenetic placement (Asher et al. 2005 Averianov and Archibald 2005). For full discussion and references see link |