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brachiopod

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brachiopod

Any member of the phylum Brachiopoda, marine invertebrates with two shells, resembling but totally unrelated to bivalves.

There are about 300 living species; they were much more numerous in past geological ages. They are suspension feeders, ingesting minute food particles from water. A single internal organ, the lophophore, handles feeding, aspiration, and excretion.



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? Mentioned in ? References in periodicals archive
 
Since then, volume after volume has appeared, dealing with trace fossils, spores, conodonts, sponges, plants, graptolites, foraminifers, brachiopods and, yes, more trilobites (according to some, too many, but never mind).
Early Silurian Trilobites of Anticosti Island, Quebec, Canada by Pratt, Brian R. / Geoscience Canada
Other prominent losers were the brachiopods, two-shelled animals that superficially resembled clams.
Death swept Earth at end of Permian by Monastersky, Richard / Science News
Bambach figured that passive animals that merely sat on the seafloor--like brachiopods, then the most abundant animals--would die.
Deadly carbon dioxide by Chang, Maria L. / Science World
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