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foraminifera
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foraminifera

Any marine protozoan of the order Foraminiferida, with shells of calcium carbonate. Their shells have pores through which filaments project. Some form part of the plankton, others live on the sea bottom.

The many-chambered Globigerina is part of the plankton. Its shells eventually form much of the chalky ooze of the ocean floor.

Fossil foraminifera can be used to study past changes in climate. The fossils contain the two common isotopes of oxygen, 16O and 18O, in different ratios, depending on the salinity of the sea water; therefore the colder the water, the more oxygen-18 the fossils contain.



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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
Response of benthic foraminifers to sewage discharge and remediation in Santa Monica Bay, California.
An approach to evaluation of the effect of bioremediation on ... by Boyd, Steven A. / Environmental Health Perspectives
Anderson and Archer developed a new technique to compare the abundance of complete fossils of 29 foraminifer species found in both modern and glacial sediment samples at different ocean depths in the Atlantic, Pacific, and Indian Oceans.
Tums of the sea: how good is the ocean's natural antacid? by Gorman, Jessica / Science News
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