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Xenambulacraria

Xenambulacraria is a proposed clade of animals with bilateral symmetry as an embryo, consisting of the Xenacoelomorpha and the Ambulacraria.

Phylogeny
Xenambulacraria has usually been recovered as a clade inside of either of two distinct phylogenies. Basal Xenambulacraria The following phylogeny assumes a paraphyletic Deuterostomia, with Xenambulacraria at the base of Bilateria. Xenambulacraria inside Deuterostomia The following phylogeny assumes a monophyletic Deuterostomia, with Xenambulacraria nested inside of it. == Gallery ==
Gallery
File:Nemertodermatida species.png|Various Acoelomorpha (nemertodermatids). File:Enteropneusta.png|Various Hemichordata (enteropneusts). File:Echinodermata.png|Various Echinodermata from all extant classes. == References ==
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