Release 80 Statistics

Rank Bacterial Taxa Archaeal Taxa
Phylum 99 10
Class 263 30
Order 705 84
Family 1,592 153
Genus 5,426 387
Species 12,356 718

Comparison of taxonomic ranks between GTDB and NCBI

The following graph represents difference between the bacterial NCBI and GTDB taxonomies. The GTDB and NCBI taxonomies were compared across the 84,634 bacterial genomes obtained from NCBI that comprise part of the 94,759 genomes within the GTDB. For each rank, a taxon was classified as being unchanged if the two taxonomies agreed, passively changed if the GTDB taxonomy provided rank name information absent in the NCBI taxonomy, or actively changed if the two taxonomies disagreed

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=1), the last common ancestor occurring at a fixed time in the past (RED=0), and internal nodes being linearly interpolated between these values according to lineage-specific rates of evolution. The grey bars indicate the 10th, 50th, and 90th percentile of the RED distribution at each rank. RED intervals for normalizing taxonomic ranks were operationally defined as the median RED value at each rank ±0.1 (indicated by the yellow bars; red bars indicate ±0.2).