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Concatenated ribosomal protein maximum likelihood tree of the Gallionellaceae family showing the four distinct genera: Gallionella, Sideroxydans, Ferriphaselus, and Ca. Nitrotoga. Isolates are labeled and annotated with stars. Numbers in parentheses indicate the number of genomes in each genus or group. Support values from 1,000 bootstraps are shown for major branching nodes (black dots). Detailed tree is shown in Fig. 2.
