Typical gene orders in vertebrates and Neoscopelidae with eight unique gene orders and INC-regions found in Myctophidae. 1–4 show rearranged gene orders and 5–8 show INC-sequences with all eight features treated as clade-defining synapomorphies. Taxon-specific gene rearrangements are shown at the bottom. All INC-regions are shown in grey with number of base pairs noted if known. Mt information depicted is provided from all included taxa within the clades except for the rearrangement in 3 (information from N. ritteri and L. crocodilus), in 4 (information from M. affine and M. nitidulum) and in 6 (information from K. anderssoni and E. antarctica). The missing information for some included taxa is due to unsuccessful amplification of particular regions. All eight features are discussed in the text. Abbreviations follow common mt usage and colorcoding is signifying the same clades and defining gene orders throughout all figures in this article.