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="20130612052601" timestamp="2013-06-12T05:26:01Z" ns="0" title="American Gamefowl" />
        <page value="20130612053055" timestamp="2013-06-12T05:30:55Z" ns="0" title="Andalusian" />
        <page value="20130612091455" timestamp="2013-06-12T09:14:55Z" ns="0" title="Turkeys" />
        <page value="20130612095001" timestamp="2013-06-12T09:50:01Z" ns="0" title="Australian Game" />
        <page value="20130612095353" timestamp="2013-06-12T09:53:53Z" ns="0" title="Australian Langshan" />
        <page value="20130613111040" timestamp="2013-06-13T11:10:40Z" ns="0" title="Australian pit game" />
        <page value="20130613111744" timestamp="2013-06-13T11:17:44Z" ns="0" title="Australorp" />
        <page value="20130613200837" timestamp="2013-06-13T20:08:37Z" ns="0" title="Barnevelder" />
        <page value="20130616205338" timestamp="2013-06-16T20:53:38Z" ns="0" title="Araucana" />
        <page value="20130627102303" timestamp="2013-06-27T10:23:03Z" ns="0" title="Belgian Bantam" />
      </results>
    </querypage>
  </query>
</api>