FIGURE 1 in Should the terms 'basal taxon' and 'transitional taxon' be extinguished from cladistic studies with extinct organisms?

FIGURE 1. Simplified cladogram showing the relationships of the three main lineages of dinosaurs with focus on Sauropodomorpha. Letters A - F are related to clades treated in the main text. The assumed ages for the taxa of the tree are represented by rectangles thicker than other branches. Cladogenetic events (dichotomies) are not calibrated against geological time. Ornithischia is represented by the following taxa: Pisanosaurus, Heterodontosauridae, Eocursor, Thyreophora, Neornithischia. Theropoda is represented by the following taxa: Tawa, coelophysoids, Ceratosauria, Tetanurae. All other taxa represent Sauropodomorpha (here following the definition of Galton and Upchurch, 2004). Sauropoda (here following the definition of Salgado et al., 1997) is represented by Vulcanodon, Tazoudasaurus, Spinophorosaurus, Neosauropoda.