Mass extinctions over the last 500 myr: an astronomical cause?

@article{Erlykin2017MassEO,
  title={Mass extinctions over the last 500 myr: an astronomical cause?},
  author={Anatoly D. Erlykin and David A. T. Harper and Terry Sloan and Arnold Whittaker Wolfendale},
  journal={Palaeontology},
  year={2017},
  volume={60}
}
A Fourier analysis of the magnitudes and timing of the Phanerozoic mass extinctions (MEs) demonstrates that many of the periodicities claimed in other analyses are not statistically significant. Moreover we show that the periodicities associated with oscillations of the Solar System about the galactic plane are too irregular to give narrow peaks in the Fourier periodograms. This leads us to conclude that, apart from possibly a small number of major events, astronomical causes for MEs can… 

Comments on: Periodicity in the extinction rate and possible astronomical causes – comment on mass extinctions over the last 500 myr: an astronomical cause? (Erlykin et al.)

COMMENTS ON: PERIODICITY IN THE EXTINCTION RATE AND POSSIBLE ASTRONOMICAL CAUSES – COMMENT ON MASS EXTINCTIONS OVER THE LAST 500 MYR: AN ASTRONOMICAL CAUSE? (ERLYKIN ET AL.) by ADRIAN L. MELOTT and

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