DO PERIODICITIES IN EXTINCTION—WITH POSSIBLE ASTRONOMICAL CONNECTIONS—SURVIVE A REVISION OF THE GEOLOGICAL TIMESCALE?

@article{Melott2013DOPI,
  title={DO PERIODICITIES IN EXTINCTION—WITH POSSIBLE ASTRONOMICAL CONNECTIONS—SURVIVE A REVISION OF THE GEOLOGICAL TIMESCALE?},
  author={Adrian L. Melott and Richard K. Bambach},
  journal={The Astrophysical Journal},
  year={2013},
  volume={773}
}
A major revision of the geological timescale was published in 2012. We re-examine our past finding of a 27 Myr periodicity in marine extinction rates by re-assigning dates to the extinction data used previously. We find that the spectral power in this period is somewhat increased, and persists at a narrow bandwidth, which supports our previous contention that the Nemesis hypothesis is untenable as an explanation for the periodicity that was first noted by Raup & Sepkoski in the 1980s. We… 

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The bottom line is that although one can get a periodic model at some period to fit the extinction data, there are other models which explain the data better.

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Publisher's copyright statement: This is the accepted version of the following article: Erlykin, A. D., Harper, D. A. T., Sloan, T., Wolfendale, A. W. (2017), Periodicity in extinction rates.

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