Figures 1-2. The figures below graphically depict the active definitions in the compilation Stem Archosauria. See Tables in the navigational sidebar for an indented taxonomy that includes all active phylogenetic definitions (from Sereno, in review).

Figures 1. Pie chart showing th estatus of taxa and their respertive definitions ("active taxa" denotes those in current use by the compiler, "inactive taxa" includes those regarded as potential synonyms or rejected for other reasons by the compiler.

Figures 2: Taxon/Definition Accumulation. Accumulation profile for the publication date for ative taxa and the publication date for its intended phylogenetic definition (after Sereno, 2005a).