brachiopod

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Related to lampshell: Tunicates

brachiopod

or

lamp shell

any marine invertebrate animal of the phylum Brachiopoda. They were the dominant marine forms of PALAEOZOIC and MESOZOIC times and a few species survive. See BIVALVE.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005