Fig. 2

Maximum likelihood tree of the DnaE gene. The timescale was chosen to most closely align with H37Rv/Corynebacterium, 0.95 Gya; H37Rv/Streptomyces, 1.4 Gya [102]. Posterior probabilities of the nodal splits are shown numerically. The blue bars represent the 95% probability interval for node heights. The gray bar represents the timing of snowball Earth [11]. GOS 2721798 is a metagenomic sequence marked by the arrow on Fig. 1