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bryozoans and brachiopods
Aquatic invertebrates, usually marine, belonging to the phyla Bryozoa and Brachiopoda. Brachiopods, or clam shells, are solitary living invertebrates characterized by two shells and a lophophore, which is a complex food gathering organ. Bryozoans are colonial and include moss coral and moss polyps.
This category is also used for brachiopods and ectoprocta