Flexi Says: Platyhelminths, Annelids and Arthropods are examples of phyla that contain species with bilaterally symmetrical body plans. Platyhelminths species include flatworms, tapeworms, and flukes. Annelids include earthworms, lugworms, and leaches. Arthropoda is a huge phylum that includes all insects and crustaceans. Butterflies, bees, crabs, and lobsters are all arthropods.
