Visualising extinctions over the past million 531 years. The size of the circle shows how the biodiversity of the earth differs from the long-term trend. The resulting fluctuations seem to repeat every 62 million years or so, with 5 main extinction events in total.
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Visualising extinctions over the past million 531 years. The size of the circle shows how the biodiversity of the earth differs from the long-term trend. The resulting fluctuations seem to repeat every 62 million years or so, with 5 main extinction events in total.