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Table 1 Time estimates for selected nodes in the tree of eubacteria (A-K) and archaebacteria (L-P). Letters refer to Fig. 3.

From: A genomic timescale of prokaryote evolution: insights into the origin of methanogenesis, phototrophy, and the colonization of land

  Time (Ma)a CIb
Node A 102 57–176
Node B 2508 2154–2928
Node C 2800 2452–3223
Node D 1039 702–1408
Node E 2558 2310–2969
Node F 2784 2490–3203
Node G 2923 2587–3352
Node H 3054 2697–3490
Node I 3186 2801–3634
Node J 3644 3172–4130
Node K 3977 3434–4464
Node L 233 118–386
Node M 3085 2469–3514
Node N 3566 2876–3948
Node O 3781 3047–4163
Node P 4112 3314–4486
  1. a Averages of the divergence times estimated using the 2.3 Ga minimum constraint and the five ingroup root constraints (nodes A-K) and using the 1.198 ± 0.022 Ga constraint and the five ingroup root constraints (nodes L-P).
  2. b Credibility interval (minimum and maximum averages of the analyses under the five ingroup root constraints)