Ambulacraria

Ambulacraria or Coelomopora is a clade of invertebrate phyla which includes echinoderms and hemichordates; a member of this group is called an ambulacrarian. The Ambulacraria are part of the Deuterostomes, a larger clade that also includes the Chordata and Vetulicolia. The two living phyla with representative organisms are: * Phylum Echinodermata (sea stars, sea urchins, brittle stars, sea cucumbers, feather stars, sea lilies, etc.) * Phylum Hemichordata (acorn worms, Pterobranchia, and possibly graptolites) Fossil taxa that may lie on the stem lineage:

Ambulacraria

Ambulacraria or Coelomopora is a clade of invertebrate phyla which includes echinoderms and hemichordates; a member of this group is called an ambulacrarian. The Ambulacraria are part of the Deuterostomes, a larger clade that also includes the Chordata and Vetulicolia. The two living phyla with representative organisms are: * Phylum Echinodermata (sea stars, sea urchins, brittle stars, sea cucumbers, feather stars, sea lilies, etc.) * Phylum Hemichordata (acorn worms, Pterobranchia, and possibly graptolites) Fossil taxa that may lie on the stem lineage: