<?xml version='1.0' encoding='utf-8'?>
<oai_dc:dc xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
  <dc:contributor>M.-P. Aubry</dc:contributor>
  <dc:contributor>W.A. Berggren</dc:contributor>
  <dc:contributor>J.M. Fenner</dc:contributor>
  <dc:contributor>L.D. Keigwin Jr.</dc:contributor>
  <dc:contributor>G. Keller</dc:contributor>
  <dc:creator>B.H. Corliss</dc:creator>
  <dc:date>1984</dc:date>
  <dc:description>Analysis of middle Eocene to early Oligocene calcareous and siliceous microfossils shows gradual biotic changes with no massive extinction event across the Eocene/Oligocene boundary. Biotic changes in the late Paleogene appear to reflect changing paleoclimatic and paleoceanographic conditions and do not support suggestions of a catastrophic biotic event caused by a bolide impact at the Eocene/Oligocene boundary.</dc:description>
  <dc:format>application/pdf</dc:format>
  <dc:identifier>10.1126/science.226.4676.806</dc:identifier>
  <dc:language>en</dc:language>
  <dc:publisher>American Association for the Advancement of Science</dc:publisher>
  <dc:title>The Eocene/Oligocene boundary event in the deep sea</dc:title>
  <dc:type>article</dc:type>
</oai_dc:dc>