Trachodon
...that Trachodon, despite being a well-known and often-used duckbill name in the past, is based on teeth that include both duckbill and horned dinosaur specimens?
...that <i id="mwBgI"><b id="mwBgM"><a href="./Trachodon" id="mwBgQ" rel="mw:WikiLink" title="Trachodon">Trachodon</a></b></i>, despite being a well-known and often-used <a class="mw-redirect" href="./Hadrosaurid" id="mwBgU" rel="mw:WikiLink" title="Hadrosaurid">duckbill</a> name in the past, is based on teeth that include both <a class="mw-redirect" href="./Hadrosaurid" id="mwBgY" rel="mw:WikiLink" title="Hadrosaurid">duckbill</a> and <a class="mw-redirect" href="./Ceratopsid" id="mwBgc" rel="mw:WikiLink" title="Ceratopsid">horned dinosaur</a> specimens?