Table 4.

Estimated divergence dates based on two different calibration methods using 1,152 base pairs of mitochondrial DNA for the North American vaejovid scorpions Pseudouroctonus reddelli and Pseudouroctonus sprousei

Node	Baja vaejovid calibration	buthid ‘scorpion clock’
P. sprousei/P. reddelli	49.25 (28.94–73.24)	39.16 (24.85–54.95)
P. reddelli	2.58 (1.70–3.61)	2.08 (1.51–2.67)
Subclade 1	1.45 (0.86–2.13)	1.17 (0.76–1.62)
Subclade 2	1.40 (0.78–2.07)	1.13 (0.69–1.57)
New Braunfels	0.81 (0.37–1.31)	0.64 (0.31–0.99)
Marble Falls	0.16 (0.02–0.34)	0.13 (0.02–0.27)

Referenced nodes are indicated in Figure 2. Divergence times in millions of years are followed by 95% posterior density intervals in parentheses.