Fig. 1 in Acoelomorpha: earliest branching bilaterians or deuterostomes?

Fig. 1 Diverse phylogenetic hypotheses on the Acoelomorpha through time. a Consensus tree of diverse morphological-based studies including acoelomorphs within Platyhelminthes in the protostomes (see text for references). b Tree modified from Haszprunar (1996) showing paraphyletic Platyhelminthes as early diverging bilaterians. c Summary of the first molecular phylogenies with a significative taxon sampling for