Paleoanguimorpha
Pythonomorphs represented by snakes today are not closely related to varanoids and are instead a sister lineage to Anguimorpha and Iguania in the clade Toxicofera . 
<triplet> Anguimorpha <subj> Toxicofera <obj> parent taxon <triplet> Iguania <subj> Toxicofera <obj> parent taxon