Along with the chordates and two minor phyla, this phylum's members are deuterostomes. Their nervous systems consists of central nerve rings, while its vascular system consists of a madreporite through which fluid enters, the stone canal, the ring canal, and the radial canals. Other salient features include ampullae which, upon contracting, extend out another feature, the tube feet.  FTP, name this phylum whose members are radially symmetric and whose members include sand dollars, sea urchins, a
Along with the chordates and two minor phyla, this phylum's members are deuterostomes. Their nervous systems consists of central nerve rings, while its vascular system consists of a madreporite through which fluid enters, the stone canal, the ring canal, and the radial canals. Other salient features include ampullae which, upon contracting, extend out another feature, the tube feet.  FTP, name this phylum whose members are radially symmetric and whose members include sand dollars, sea urchins, and starfish.
Along with the chordates and two minor phyla, this phylum's members are deuterostomes.
echinodermata or echinoderms