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9 Cards in this Set

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  • Back
An invertebrate animal having an exoskeleton, a segmented body, and jointed appendages. It include the insects, arachnids, crustaceans, and others. (P)
P. Arthropoda
A phylum of marine animals which include star fish, feather stars, brittle stars, sea urchin, and sea cucumbers. (P)
P. Echinodermata
Velvet worms. (P)
P. Onychophora
Arrow worms. (P)
P. Chaetognatha
Worm-shaped marine deuterostome animals, generally considered the sister group of the echinoderms. It includes acorn worms and an extinct class as well. (P)
P. Hemichordata
Marine animals that have hard "valves" (shells) on the upper and lower surfaces. The valves are hinged at the rear end, while the front can be opened for feeding or closed for protection. (P)
P. Brachiopoda
Peanut worms. (P)
P. Sipuncula
Spoon worms. (P)
P. Echiura
Animals which at one point in the lifetime have a notochord, hollow dorsal nerve cord, pharyngeal slits, endostyle, and a post-anal tail. (P)
P. Chordata