Reports

Isotopic and Zoogeographic Paleotemperatures of Californian Pleistocene Mollusca

Science  23 Sep 1960:
Vol. 132, Issue 3430, pp. 810-811
DOI: 10.1126/science.132.3430.810

Abstract

Pleistocene paleotemperatures inferred from zoogeographic evidence are based on temperatures at species' range limits at present. Paleotemperatures inferred from isotopic evidence are based on average former shell-growth temperatures which commonly, but not exclusively, lie between present range-limiting temperatures. With allowance for these differences, the two lines of evidence suggest similar thermal patterns.

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