Accurate and precise estimates of origination and extinction rates

  title={Accurate and precise estimates of origination and extinction rates},
  author={John Alroy},
  • J. Alroy
  • Published in Paleobiology 7 May 2014
  • Environmental Science
Abstract Paleobiologists have used many different methods for estimating rates of origination and extinction. Unfortunately, all equations that consider entire age ranges are distorted by the Pull of the Recent, the Signor-Lipps effect, and simple edge effects. Attention has been paid recently to an equation of Foote's that considers counts of taxa either crossing the bottom and top of an interval or crossing one boundary but not the other. This generalized boundary-crosser (BC) method has… 

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  • J. Alroy
  • Environmental Science
  • 2015
A new turnover rate metric is introduced that combines simplicity and precision and yields values that are highly correlated with those produced by the gap-filler equation but more precise in simulation.

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  • J. Alroy
  • Environmental Science
  • 2020
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  • P. Wagner
  • Environmental Science, Geography
  • 2019
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  • J. Alroy
  • Environmental Science, Geography
  • 1996

Origination and extinction components of taxonomic diversity: general problems

  • M. Foote
  • Environmental Science, Geography
  • 2000
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Speciation and extinction in the fossil record of North American mammals

Paleontological research has focused far more strongly on taxonomic diversity than on speciation in recent years, and turnover rates have focused on two overriding issues: whether they can be explained using intrinsic dynamic mechanisms, such as either density dependence or constraints on morphology.

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  • J. Alroy
  • Environmental Science, Geography
    Proceedings of the National Academy of Sciences
  • 2008
The discipline-wide effort to database the fossil record at the occurrence level has made it possible to estimate marine invertebrate extinction and origination rates with much greater accuracy. The

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  • J. Alroy
  • Environmental Science, Geography
  • 2010
Abstract:  The Paleobiology Database now includes enough data on fossil collections to produce useful time series of geographical and environmental variables in addition to a robust global

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Many areas of paleobiological research require reliable extinction metrics. Branching-and-extinction simulations and data on Phanerozoic marine families and genera are used to investigate the