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The AAPG/Datapages Combined Publications Database

GCAGS Transactions


Gulf Coast Association of Geological Societies Transactions
Vol. 19 (1969), Pages 423-424

Deposit-Feeding Pelecypods in Recent Marine Faunas

David Nicol


All epifaunal and most infaunal pelecypods are suspension feeders; but all protobranchs, including the solemyids, and almost all tellinids and semelids are deposit feeders. The protobranchs are the more diverse in cold and temperate water, and the tellinids and semelids are the more diverse in warm water. The 20° C isotherm divides those pelecypod faunas dominated by protobranchs from those dominated by tellinids and semelids. The abyssal fauna has a larger percentage of deposit feeders than any shallow-water fauna because of the greater diversity of protobranchs. The Antarctic fauna is the only one devoid of tellinaceans.

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