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Science 29 September 1967:
Vol. 157. no. 3796, pp. 1554 - 1555
DOI: 10.1126/science.157.3796.1554
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Articles

Secondary Calcification in the Foraminiferal Genus Globorotalia

W. N. Orr 1

1 University of Oregon, Eugene

Populations of four species of the planktonic foraminiferal genus Globorotalia from sediments in the Gulf of Mexico show the effects of secondary thickening of the test. Quantitative tabulation of the distribution of thin- and thick-walled specimens illustrates an abrupt and separate depth at which the thickening takes place for each species.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Secondary Calcification of the Planktonic Foraminifer Neogloboquadrina pachyderma as a Climatic Index.
M. S. Srinivasan, M. S. Srinivasan, and J. P. Kennett (1974)
Science 186, 630-632
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Science. ISSN 0036-8075 (print), 1095-9203 (online)