Fig. 58. A in The Early Evolution Of Archosaurs: Relationships And The Origin Of Major Clades

Fig. 58. A, time-calibrated phylogeny of archosauriforms based on the relationships found in the phylogeny presented in figure 51. Timescale based on Gradstein et al. (2004) with the recent modifications of Muttoni et al. (2004, 2009), Mundil et al. (2004, 2010), Furin et al. (2006), and Schaltegger et al. (2008). The black bars represent ranges of clades whereas white boxes represent the possible range of taxa. Short dashed line 5 lineages that diverged by the end of the Early Triassic. Long dashed line 5 lineages that diverged by the end of the Anisian. Abbreviations: PERM 5 Permian; Ind 5 Induan; Olen 5 Olenekian.