Ambulacraria

Ambulacraria is a clade of invertebrates which includes echinoderms, hemichordates, and Xenoturbellida; a member of this group is called an ambulacrarian. This superphylum is largely identical to the superphylum Deuterostomia, except the phylum Chordata is not found in Ambulacraria. The three living phyla, with representative organisms, are: Fossi
Found on http://en.wikipedia.org/wiki/Ambulacraria
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