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Some evolutionary correlates of higher taxa

Published online by Cambridge University Press:  08 April 2016

Eric W. Holman*
Affiliation:
Department of Psychology, University of California, Los Angeles, California 90024

Abstract

Nonparametric randomization tests were used to determine whether fossil marine families classified in different higher taxa are significantly different in their durations, their rates of origination and extinction, and their proportion of originations. For each of these properties, significant differences among orders and classes were found that could not be explained by differences at other taxonomic ranks, but no such differences were found among phyla. Thus, orders and classes appear to possess an evolutionary coherence that phyla lack.

Type
Articles
Copyright
Copyright © The Paleontological Society 

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