Deuterostomes and Chordates 1. BIOL 1407. Deuterostomes. Phylum Echinodermata Sea stars, sea urchins, sea cucumbers, crinoids Phylum Chordata Tunicates, lancelets, fishes, amphibians, reptiles, birds, mammals. Phylum Echinodermata. Phylum Echinodermata. Larvae: bilateral symmetry
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Peter Halasz, 2006, Wikimedia Commons
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Campbell, et al. 2008. Biology, 8th ed. Pearson Benjamin Cummings.