Table 1.

Effect on ΔT assuming different ages for the most ancestral Type II reaction center proteins

Root prior (Ga)	II	D0	Ancestral standard D1	ΔT (range)
CAT + GTR + Γ
3.2	3.25 ± 0.05	2.80 ± 0.16	1.99 ± 0.19	0.80 (1.17–0.44)
3.5	3.54 ± 0.05	3.22 ± 0.19	2.19 ± 0.24	1.02 (1.44–0.60)
3.8	3.83 ± 0.05	3.44 ± 0.21	2.27 ± 0.24	1.17 (1.62–0.71)
4.1	4.12 ± 0.05	3.71 ± 0.23	2.38 ± 0.25	1.32 (1.81–0.84)
CAT + GTR + Γ and removing calibration point 11
3.5	3.52 ± 0.05	3.00 ± 0.29	1.78 ± 0.25	1.22 (1.77–0.66)
3.8	3.81 ± 0.05	3.15 ± 0.29	1.77 ± 0.25	1.37 (1.93–0.81)
LG + Γ
3.2	3.27 ± 0.05	3.19 ± 0.08	2.51 ± 0.13	0.68 (0.89–0.46)
3.5	3.53 ± 0.05	3.40 ± 0.09	2.64 ± 0.15	0.77 (1.00–0.53)
3.8	3.81 ± 0.05	3.64 ± 0.12	2.77 ± 0.17	0.88 (1.16–0.58)
4.1	4.10 ± 0.05	3.91 ± 0.14	2.90 ± 0.19	1.01 (1.34–0.68)
LG + Γ and removing calibration point 11
3.5	3.49 ± 0.05	3.18 ± 0.19	2.30 ± 0.20	0.87 (1.26–0.48)
3.8	3.79 ± 0.05	3.52 ± 0.19	2.55 ± 0.22	1.38 (0.97–0.55)