Fig 5. Molecular Distance Map of class Amphibia and three of its orders.

The total number of mtDNA sequences is 112, the average DSSIM distance is 0.8445, and the MDS Stress-1 is 0.18. Note that the shape of the amphibian cluster and the (x, y)-coordinates of sequence-points are different here from those in Fig. 4. This is because MDS outputs a map that aims to preserve pairwise distances between points, but not necessarily their absolute coordinates.