In one phylogenetic tree, the parasitic kinetoplastids included two separate groups of species – C. helicis and Trypanoplasma borreli in one group and the trypanosomatids in the other.
One phylogenetic tree distinguished between two groups of parasitic kinetoplastids: C. helicis and Trypanoplasma borreli, forming one group, while the trypanosomatids formed a separate group.