| As with many of the modem Eucopia species, this fossil taxon is characterized by the possession of highly elongate posterior pereiopods. |
| Such a radical change in the mitochondrial gene arrangement within a closely related taxon has never been observed in other coelomate phyla. |
| Each taxon represents a single species, except where the number of taxa is given in parentheses. |
| According to our results, Sclerothorax is nested well within the higher stereospondyls, forming the sister taxon of capitosauroids. |
| As shown above, using a third taxon to estimate the initial pairwise distances improves their precision. |
| The proboscis is a synapomorphy of the taxon and is used primarily in prey capture. |
