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. 2020 Aug 7;11:3939. doi: 10.1038/s41467-020-17408-w

Fig. 1. Phylogenetic placement of Undinarchaeota.

Fig. 1

a Maximum-likelihood phylogenetic analysis (LG + C60 + F + R model) of the concatenated 50% top-ranked marker proteins (n = 56) and 364 taxa set. For this alignment 10% of the most heterogeneous sites were removed using chi2 pruning. The full tree is shown in Supplementary Fig. 19. b Bayesian phylogenetic tree (CAT + GTR model) of an alignment generated with the 25% top-ranked marker proteins (n = 28) and 127 taxa set. The full tree is shown in Supplementary Fig. 10. Euryarchaeota 1 includes all Euryarchaeota with the exception of Theionarchaea, Thermococci, Persephonarchaea and Hadesarchaea, which are clustered in Euryarchaeota 2. Scale bar: Average number of substitutions per site. c–f Possible positions of the archaeal root inferred using bacteria as an outgroup (c) or using the nonreversible model in IQ-TREE 2 d–f. All of these methods recover a clade of Undinarchaeota and Cluster 2 DPANN, consistent with synapomorphies including a fused DNA primase and a reduced exosome that lacks Csl4.