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<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>L.A. Buatois</dc:contributor>
  <dc:contributor>C.G. Maples</dc:contributor>
  <dc:contributor>R.R. West</dc:contributor>
  <dc:creator>M.G. Mangano</dc:creator>
  <dc:date>2000</dc:date>
  <dc:description>&lt;p&gt;Predominantly horizontal, gently curved to slightly sinuous traces constituting uniserial rows of imbricated, subspherical sediment pads occur in Pennsylvanian tidal-flat facies of eastern Kansas. These traces exhibit a complex, actively filled internal structure. The presence of a median tunnel enveloped by overlapping pads of reworked sediment indicates that these biogenic structures should be included in the ichnogenus&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;i&gt;&lt;span class="italic"&gt;Nereites&lt;/span&gt;&lt;/i&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;MacLeay in Murchison, 1839. A new ichnospecies,&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;i&gt;&lt;span class="italic"&gt;N. imbricata&lt;/span&gt;&lt;/i&gt;, is erected. Externally,&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;i&gt;&lt;span class="italic"&gt;Nereites imbricata&lt;/span&gt;&lt;/i&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;differs from the other&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;i&gt;&lt;span class="italic"&gt;Nereites&lt;/span&gt;&lt;/i&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;ichnospecies by the large, tightly packed, imbricated pads that commonly result in an annulated appearance on bedding-planes. Internally, obliquely arranged, arcuate laminae envelope the median tunnel and tend to follow the outline of the external semispherical pads. Additionally, the behavioral pattern reflected by&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;i&gt;&lt;span class="italic"&gt;N. imbricata&lt;/span&gt;&lt;/i&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;is less specialized than that of the other&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;i&gt;&lt;span class="italic"&gt;Nereites&lt;/span&gt;&lt;/i&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;ichnospecies.&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;i&gt;&lt;span class="italic"&gt;Eione monoliformis&lt;/span&gt;&lt;/i&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;Tate, 1859 resembles&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;i&gt;&lt;span class="italic"&gt;N. imbricata&lt;/span&gt;&lt;/i&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;in general appearence, but lack the diagnostic&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;i&gt;&lt;span class="italic"&gt;Nereites&lt;/span&gt;&lt;/i&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;internal structure, and is invariably preserved as positive epireliefs. Occurrence of&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;i&gt;&lt;span class="italic"&gt;Nereites imbricata&lt;/span&gt;&lt;/i&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;as both median tunnels surrounded by reworked sediment (&lt;i&gt;&lt;span class="italic"&gt;Nereites&lt;/span&gt;&lt;/i&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;preservation) and uniserial rows of imbricated sediment pads (&lt;i&gt;&lt;span class="italic"&gt;Neonereites&lt;/span&gt;&lt;/i&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;preservation) supports the notion that&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;i&gt;&lt;span class="italic"&gt;Neonereites&lt;/span&gt;&lt;/i&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;Seilacher, 1960 is a preservational variant of&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;span class="italic"&gt;&lt;i&gt;Nereites&lt;/i&gt;.&lt;/span&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;The ichnogenus&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;i&gt;&lt;span class="italic"&gt;Nereites&lt;/span&gt;&lt;/i&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;is an eurybathic form and is a common component of Paleozoic shallow-marine facies.&lt;/p&gt;</dc:description>
  <dc:format>application/pdf</dc:format>
  <dc:identifier>10.1666/0022-3360(2000)074&lt;0149:ANIONF&gt;2.0.CO;2</dc:identifier>
  <dc:language>en</dc:language>
  <dc:publisher>Cambridge University Press</dc:publisher>
  <dc:title>A new ichnospecies of Nereites from carboniferous tidal-flat facies of eastern Kansas, USA: Implications for the Nereites-Neonereites debate</dc:title>
  <dc:type>article</dc:type>
</oai_dc:dc>