Supplementary figure 1. Species-level phylogenetic hypothesis for ammonites of the western Tethys, for the entire early Pliensbachian and for each chronozone of this substage

Species-level phylogenetic hypothesis for early Pliensbachian ammonites (214 sp; after Hardy et al. 2012) together with their province(s) of occurrence (A); and subtrees for species of the Jamesoni (B; 132 sp), Ibex (C; 103 sp) and Davoei (D; 45 sp) chronozones. Inter-species phylogenetic distances correspond to branch lengths between each species pair in the phylogeny. Abbreviations: MED, Mediterranean; NWE, Northwest European; sp, species.