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Nature 434, 147-148 (10 March 2005) | doi:10.1038/434147a; Published online 9 March 2005

Biodiversity:  Fossils make waves

James W. Kirchner1 & Anne Weil2

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A 62-million-year cycle in biodiversity emerges from scrutiny of a marine-fossil database, but its causes remain mysterious. Thus, this discovery is likely to provoke a flurry of theoretical speculation.

For decades, palaeobiologists have been finding large-scale cycles and patterns in fossil records, and one might assume that there was nothing substantial left to be discovered. Not by a country mile!

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