The taxonomic analysis of mass extinction intervals: An approach to problems of resolution as shown by Cretaceous ammonite genera (global) and species (Western Interior of the United States)

  • Collom Christopher J. 
Mesozoic Events
Part of the Lecture Notes in Earth Sciences book series (LNEARTH, volume 30)


The application of diverse, yet basic, analytical metrics to high-resolution temporal and taxonomic data allows for precise documentation of ammonite origination, diversification, extinction, and turnover rates at the genus-substage and species-biozone level through mass extinction intervals. These dynamics are investigated for the entire Cretaceous for ammonites at the generic level, and during the highly dynamic Cenomanian-Turonian extinction interval at the specific level. A stepwise pattern of extinction can be interpreted from these data when investigated using high-resolution event stratigraphic techniques.


Mass Extinction Extinction Rate Diversification Rate Extinction Pattern Ammonite Genus 
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Copyright information

© Springer-Verlag 1990

Authors and Affiliations

  • Collom Christopher J. 
    • 1
  1. 1.Dept. of Geological SciencesUniversity of ColoradoBoulderUSA

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