Bit by Bit: The Darwinian Basis of Life
Phylogenetic tree of life based on small-subunit ribosomal RNA sequences, showing representative species from each of the three kingdoms (compiled by Pace ).
The root of the tree is indicated by a horizontal line. The locations on the tree of Halomonas sp. (GFAJ-1)  and Mycoplasma mycoides (JCVI-syn1.0)  are indicated by black circles adjacent to Escherichia and Bacillus, respectively.