Table 6. Estimates of time since divergence between northern and southern subsystem A. aequidens populations: Ln(likelihood) – posterior likelihood of the calibration method employed; estimated time since most recent common ancestor (tmrca - Ma), and estimated divergence rate (% per My).

Calibration Method	Ln(likelihood)	Tmrca (Ma)	Estimated divergence rate
3.6%	−1456.221	1.574 (1.46–2.26)	-
2 Ma	−1457.064	2.380 (1.5–4.37)	2%
1 Ma	−1457.064	0.867 (0.5–1.53)	7%
0.1 Ma	−1457.064	0.467 (0.25–0.72)	11%