Figure 4.

Divergence times of extant mammals

A, C: Mean values (solid dots) and 95% HPD intervals (solid lines) for interordinal (left part of gray vertical line) and intraordinal (right part of gray vertical line) divergence times, derived from DNA sequences (purple solid dots and lines) and protein alignments (orange solid dots and lines) of Datasets A and B, respectively. B, D: Intraordinal divergence times as reported by Meredith et al. (2011) from corresponding sequences of A and C, respectively. 26 DNAs and 98 DNAs represented DNA sequences, 21 AAs and 98 AAs represented protein alignments. AR represented autocorrelated clock and IR represented the independent clock. Dotted line indicates KPg boundary.