Hurdia
... that the 500-million-year-old Cambrian predator Hurdia was thought to be a number of separate organisms for 100 years, until the complete animal was reconstructed in March 2009?
... that the 500-million-year-old <a href="./Cambrian" id="mwAzY" rel="mw:WikiLink" title="Cambrian">Cambrian</a> predator <i id="mwAzc"><b id="mwAzg"><a href="./Hurdia" id="mwAzk" rel="mw:WikiLink" title="Hurdia">Hurdia</a></b></i> was thought to be a number of separate organisms for 100<span id="mwAzo" typeof="mw:Entity"> </span>years, until the complete animal was reconstructed in March<span id="mwAzs" typeof="mw:Entity"> </span>2009?