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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
 
1983, Paleobathymetric significance of foraminifera from the Hokuroko district, in Ohmoto, H.
Igneous rock associations 6. modelling of deep submarine pyroclastic ... by Lentz, D.R. / Geoscience Canada
The results of one new study of foraminifera shells lead to comforting scenarios in which the ocean, over thousands of years, can handle atmospheric carbon dioxide rises without changing their pH.
Tums of the sea: how good is the ocean's natural antacid? by Gorman, Jessica / Science News
Based on a detailed census of the end of the Permian event and the C-T mass extinction, everything from microscopic foraminifera to tetrapods seems to have vanished in an extremely short period (3,5).
Paleoecotoxicology: the impact of chemical and physical stress in the ... by Herkovits, Jorge / Environmental Health Perspectives
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