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Some quantitative methods for studying evolutionary patterns in single characters

Published online by Cambridge University Press:  08 February 2016

Brian Charlesworth*
Affiliation:
School of Biological Sciences, University of Sussex, Brighton BN1 9QG, U.K.

Abstract

Some statistical methods are described for the detection and estimation of variability in the rate of evolution, from biometrical data on single characters in fossil lineages. The methods were applied to some published examples of protistan and mammalian lineages, extending between 0.8 and 6.4 Myr in duration. Of six cases examined, only one failed to show evidence for significant variation in the rate of evolution, and only four deviated significantly from a random walk pattern, despite significant net evolutionary change in all cases but one.

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Articles
Copyright
Copyright © The Paleontological Society 

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