<?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>Herman Jaeger</dc:contributor>
  <dc:contributor>G. Donald Eberlein</dc:contributor>
  <dc:creator>Michael Churkin Jr.</dc:creator>
  <dc:date>1970</dc:date>
  <dc:description>&lt;div class="abstract-group"&gt;&lt;div class="article-section__content en main"&gt;&lt;p&gt;The youngest zones of&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;i&gt;Monograptus&lt;/i&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;occur in Devonian black shale and slate along the western shore of Prince of Wales Island and on Noyes Island, southeastern Alaska. The following five species of&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;i&gt;Monograptus&lt;/i&gt;, in close association with vascular plants and marine shelly faunas, indicate a Praguian, (Siegenian to Early Emsian), late Lower Devonian and possibly early Middle Devonian age:&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;i&gt;M. yukonensis&lt;/i&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;Jackson &amp;amp; Lenz,&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;i&gt;M.&lt;/i&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;n. sp. aff.&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;i&gt;yukonensis ?&lt;/i&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;Jaeger &amp;amp; Stein,&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;i&gt;M. aeqimbilis notoaequakilis&lt;/i&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;Jaeger &amp;amp; Stein,&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;i&gt;M. pacificus&lt;/i&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;Jaeger n. sp. and&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;i&gt;M. craigensis&lt;/i&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;Jaeger n. sp. The&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;i&gt;yukonensis&lt;/i&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;zone containing&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;i&gt;M. craigensis&lt;/i&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;in its upper part is followed stratigraphically higher by the&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;i&gt;M. pacificus&lt;/i&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;zone – the youngest occurrence of&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;i&gt;Monograptus.&lt;/i&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;The new species belong to the&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;i&gt;M. uncinatus&lt;/i&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;group and, like most Praguian monograptids, have long dorsal tongues on their siculae.&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;i&gt;M. craigensis&lt;/i&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;and&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;i&gt;M. pacificus&lt;/i&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;increase to seven the number of species of&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;i&gt;Monograptus&lt;/i&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;known from the Praguian. On the basis of the Alaskan material, the geographical distribution of&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;i&gt;M. aequabilis notoaequabilis&lt;/i&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;now includes North America in addition to previously recorded occurrences in Australia, Southeast Asia, and Europe. This broad geographic distribution suggests that the last survivors of&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;i&gt;Monograptus&lt;/i&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;had worldwide distribution and a rather uniform assemblage of species.&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;</dc:description>
  <dc:format>application/pdf</dc:format>
  <dc:identifier>10.1111/j.1502-3931.1970.tb01857.x</dc:identifier>
  <dc:language>en</dc:language>
  <dc:publisher>Wiley-Blackwell</dc:publisher>
  <dc:title>Lower Devonian graptolites from southeastern Alaska</dc:title>
  <dc:type>article</dc:type>
</oai_dc:dc>