Alopias palatasi
... that the extinct giant thresher shark Alopias palatasi is the only one of its kind to possess serrated teeth ?
... that the extinct giant <a href="./Thresher_shark" id="mwCto" rel="mw:WikiLink" title="Thresher shark">thresher shark</a> <i id="mwCts"><b id="mwCtw"><a href="./Alopias_palatasi" id="mwCt0" rel="mw:WikiLink" title="Alopias palatasi">Alopias palatasi</a></b></i> is the only one of its kind to possess serrated teeth <i id="mwCt4">(pictured)</i>?