Katrin Braun, Fanny Leubner, Thomas Stach

Cladistics Volume36, Issue3, June 2020, Pages 259–300 doi:10.1111/cla.12405

Phylogenetic analysis of phenotypic characters of Tunicata supports basal Appendicularia and monophyletic Ascidiacea

Places appendicularians basal in tunicates. Detailed summary of past studies pro and con that placement.