Simplified phylogenetic relationships of Diapsida.

<p>(A) Phylogenetic positions of Sauria (blue box) and several species previously considered as Permo-Triassic lepidosauromorphs (red boxes), based upon the phylogenetic analysis of Bickelmann et al. <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0089165#pone.0089165-Bickelmann1" target="_blank">[70]</a> (illustration simplified) (B) Holotype (AM 3585) of <i>Paliguana whitei</i>, the oldest known lepidosauromorph from the Early Triassic of South Africa, in right lateral view. Scale bar equals 5 mm.