<?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>W. J. Kennedy</dc:contributor>
  <dc:contributor>G. R. Scott</dc:contributor>
  <dc:creator>W. A. Cobban</dc:creator>
  <dc:date>1997</dc:date>
  <dc:description>&lt;p&gt;&lt;i&gt;Didymoceras puebloense&lt;/i&gt;&lt;span&gt;&amp;nbsp;nov. sp. is described from the upper Campanian zones of&amp;nbsp;&lt;/span&gt;&lt;i&gt;Didymoceras nebrascense &lt;/i&gt;&lt;span&gt;and&amp;nbsp;&lt;/span&gt;&lt;i&gt;Didymoceras stevensoni&lt;/i&gt;&lt;span&gt;&amp;nbsp;in Pueblo and Pitkin Counties, Colorado, and Weston County, Wyoming in the United States Western Interior. The species is characterized by a middle helical growth stage in which the succesive whorls are widely separated followed by a terminal pendant U-shaped sector of the adult body chamber. Ornament is of distant, narrow bituberculate ribs usually separated by a nontuberculate rib. Widely separated poorly-defined constrictions with associated collar ribs are occasionally present. The style of coiling in middle and later growth resembles that of those growth stages in upper Campanian&amp;nbsp;&lt;/span&gt;&lt;i&gt;Didymoceras&lt;/i&gt;&lt;span&gt;, whereas the ornament recalls that of middle Campanian representatives of the genus in the Western Interior.&lt;/span&gt;&lt;/p&gt;</dc:description>
  <dc:format>application/pdf</dc:format>
  <dc:identifier>10.1016/S0016-6995(97)80229-X</dc:identifier>
  <dc:language>en</dc:language>
  <dc:publisher>Elsevier</dc:publisher>
  <dc:title>Didymoceras puebloense, a new species of heteromorph ammonite from the Upper Campanian of Colorado and Wyoming</dc:title>
  <dc:type>article</dc:type>
</oai_dc:dc>