Release 83 Statistics

Rank Bacterial Taxa Archaeal Taxa
Phylum 111 11
Class 270 32
Order 735 86
Family 1,659 155
Genus 5,697 383
Species 9,911 492

Comparison of taxonomic ranks between GTDB and NCBI

Comparison of GTDB and NCBI taxonomic assignments across 99,928 bacterial genomes from RefSeq/GenBank release 80. For each rank, a taxon was classified as being unchanged if its name was identical in both taxonomies, passively changed if the GTDB taxonomy provided name information absent in the NCBI taxonomy, or actively changed if the name was different between the two taxonomies..

Relative evolutionary divergence

The following graphs show the relative evolutionary divergence (RED) of taxa at each taxonomic rank (0=phylum, 1=class, ..., 5=species). RED values provide an operational approximation of relative time with extant taxa existing in the present (RED=0), the last common ancestor occurring at a fixed time in the past (RED=1), and internal nodes being linearly interpolated between these values according to lineage-specific rates of evolution. RED intervals for normalizing taxonomic ranks were operationally defined as the median RED value (indicated by a blue bar) at each rank ±0.1 (indicated by grey bars).