Genetic distances between archaeal taxa (lower left half, mean genetic distance; upper right half, standard deviation) included in the local database^a.

a<p>For the phyla <i>Crenarchaeota, Euryarchaeota, Korarchaeota</i>, and <i>Nanoarchaeota</i>, the backbone sequences were used to estimate the genetic distances.</p>b<p>Not available due to the insufficient number of comparisons.</p>c<p>Genetic distances less than 0.25 are in bold.