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="20161202165320" timestamp="2016-12-02T16:53:20Z" ns="0" title="USING DINOFLAJ2" />
        <page value="20161202165554" timestamp="2016-12-02T16:55:54Z" ns="0" title="Bold and Wynne, 1985" />
        <page value="20161202170825" timestamp="2016-12-02T17:08:25Z" ns="0" title="Class Dinophyceae Order uncertain" />
        <page value="20161202170845" timestamp="2016-12-02T17:08:45Z" ns="0" title="Order Peridiniales Suborder uncertain" />
        <page value="20161202170851" timestamp="2016-12-02T17:08:51Z" ns="0" title="Subdivision Dinokaryota Class uncertain" />
        <page value="20161202170852" timestamp="2016-12-02T17:08:52Z" ns="0" title="Subdivision Dinokaryota Class uncertain Order uncertain" />
        <page value="20161202170910" timestamp="2016-12-02T17:09:10Z" ns="0" title="Suborder Peridiniineae diagnosis" />
        <page value="20161202170911" timestamp="2016-12-02T17:09:11Z" ns="0" title="Suborder Gonyaulacineae diagnosis" />
        <page value="20161202170913" timestamp="2016-12-02T17:09:13Z" ns="0" title="Family Peridiniaceae diagnosis" />
        <page value="20161202170917" timestamp="2016-12-02T17:09:17Z" ns="0" title="Suborder Gymnodiniineae diagnosis" />
      </results>
    </querypage>
  </query>
</api>