Background and Mass Extinctions: The Alternation of Macroevolutionary Regimes

  title={Background and Mass Extinctions: The Alternation of Macroevolutionary Regimes},
  author={D. Jablonski},
  pages={129 - 133}
  • D. Jablonski
  • Published 1986
  • Biology, Medicine
  • Science
  • Comparison of evolutionary patterns among Late Cretaceous marine bivalves and gastropods during times of normal, background levels of extinction and during the end-Cretaceous mass extinction indicates that mass extinctions are neither an intensification of background patterns nor an entirely random culling of the biota. During background times, traits such as planktotrophic larval development, broad geographic range of constituent species, and high species richness enhanced survivorship of… CONTINUE READING
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