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Anagenetic Angst

Species Boundaries in Eocene Primates
  • Leonard Krishtalka
Chapter
Part of the Advances in Primatology book series (AIPR)

Abstract

About 57 million years ago a dramatic event occurred in the evolution of North American mammalian faunas: the simultaneous appearance on this continent of major new groups of mammals, including perissodactyls and artiodactyls, adapid and omomyid primates, and hyaenodontid creodonts (Krishtalka et al., 1987 and references therein; Gingerich, 1989; Krause and Maas, 1990). The event marks the onset of the Wasatchian Land Mammal Age. Subsequently, these and other groups underwent an explosive radiation that is well preserved in Eocene deposits, especially those in intermontane basins in the Western Interior.

Keywords

Fossil Record Middle Eocene Species Concept Morphologic Limit Evolutionary Species 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 1993

Authors and Affiliations

  • Leonard Krishtalka
    • 1
  1. 1.Section of Vertebrate PaleontologyCarnegie Museum of Natural HistoryPittsburghUSA

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