Student Project Figures Figure 12 Figure 29: Paraphyletic mapping of Ascidiacea (Tunicata); Thaliacea is sister taxa to the Phlebobranchia (Ascidiacea) and Appendicularia is the sister taxa to Aplousbranchia (Ascidiacea). Phylogeny also shows that Ascidiacea is the sister clade to vertebrates (Ruppert, et al, 2004). Figure 10 Figure 11 Figure 12