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Science 22 May 1964:
Vol. 144. no. 3621, pp. 1004 - 1005
DOI: 10.1126/science.144.3621.1004
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Articles

Oxygen Isotopic Composition of Some Right-and Left-Coiled Foraminifera

A. Longinelli 1 and E. Tongiorgi 1

1 Laboratorio di Geologia Nucleare, Universitá di Pisa, Pisa, Italy

Right-and left-coiled foraminiferal species were collected from living and fossil faunas from different habitats. A difference in the oxygen isotopic composition of right-and left-coiled specimens was observed. Deposition of calcium carbonate by right-and left-coiled Foraminifera takes place, at least in the species measured, during non-coincident periods of the year.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)