You are looking at the HTML representation of the XML format.
HTML is good for debugging, but is unsuitable for application use.
Specify the format parameter to change the output format.
To see the non HTML representation of the XML format, set format=xml.
See the complete documentation, or API help for more information. 
<?xml version="1.0"?>
<api>
  <query-continue>
    <querypage qpoffset="10" />
  </query-continue>
  <query>
    <querypage name="Ancientpages">
      <results>
        <page value="20151022201305" timestamp="2015-10-22T20:13:05Z" ns="0" title="Quick Reference Guide for How to Use This Wiki Site" />
        <page value="20151022201327" timestamp="2015-10-22T20:13:27Z" ns="0" title="Quick Guide to Using a Wiki" />
        <page value="20151022201617" timestamp="2015-10-22T20:16:17Z" ns="0" title="Yolanda Gil" />
        <page value="20151118140750" timestamp="2015-11-18T14:07:50Z" ns="0" title="Draft model integration timelline" />
        <page value="20151118141452" timestamp="2015-11-18T14:14:52Z" ns="0" title="Team meeting at ESA conference" />
        <page value="20151201143142" timestamp="2015-12-01T14:31:42Z" ns="0" title="Action item - Save the date for year 1 workshop" />
        <page value="20151201143252" timestamp="2015-12-01T14:32:52Z" ns="0" title="Action item - Notify lake associations of award" />
        <page value="20151201145020" timestamp="2015-12-01T14:50:20Z" ns="0" title="18 Sep telecon" />
        <page value="20151201150055" timestamp="2015-12-01T15:00:55Z" ns="0" title="2015 team telecons" />
        <page value="20151207164307" timestamp="2015-12-07T16:43:07Z" ns="0" title="Action Item - Save the date for spring telecons" />
      </results>
    </querypage>
  </query>
</api>