English: A comparison of three formal classifications illustrates trends within (A) “Amoebozoa” [7,45,47]; (B) “Excavata” [7,33,60]; (C) “Plantae” [2,6,7]; and (D) “Rhizaria” [6,7,33]. A majority of solid, horizontal lines would indicate temporal stability of supergroup classification. For visual simplicity we do not indicate groups newly included in the supergroups or taxonomic restructuring within subgroups. Asterisk indicates a newly introduced term. “Chromalveolata” and “Opisthokonta” are not included because only one formal taxonomy exists for both groups. See Figure 1 for further notes.