Geoplanoidea
Geoplanoidea is a superfamily of freshwater and land triclads that comprises the species of the Geoplanidae and the Dugesiidae families. Dugesiidae and Geoplanidae share a duplication of the cluster that codifies for the 18S ribosomal RNA. Phylogeny 
Phylogenetic supertree after Sluys et al., 2009:

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Continenticola
Animal superfamilies