Mass extinction probed

Charles R. Marshall ()
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Charles R. Marshall: Molecular Biology Institute and Institute for Geophysics and Planetary Physics, University of California

Nature, 1998, vol. 392, issue 6671, 17-19

Abstract: The boundary between the Cretaceous and Tertiary periods, some 65 million years ago, is marked by a mass extinction. This is thought to have resulted from the impact of a large meteorite or comet, coupled with longer term climatic changes. But how did this impact cause the extinction? By delving into the sea-urchin fossil record, one group has shown that, for sea urchins at least, extinction was probably driven by a nutrient crisis which affected the adult life stage more severely than the larval stages.

Date: 1998
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DOI: 10.1038/32039

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