Coelurus
...that Othniel Charles Marsh named two species of the dinosaur Coelurus from the same quarry, not knowing that the bones belonged to the same skeleton?
...that <a href="./Othniel_Charles_Marsh" id="mwBrA" rel="mw:WikiLink" title="Othniel Charles Marsh">Othniel Charles Marsh</a> named two species of the <a href="./Dinosaur" id="mwBrE" rel="mw:WikiLink" title="Dinosaur">dinosaur</a> <i id="mwBrI"><b id="mwBrM"><a href="./Coelurus" id="mwBrQ" rel="mw:WikiLink" title="Coelurus">Coelurus</a></b></i> from the same <a href="./Quarry" id="mwBrU" rel="mw:WikiLink" title="Quarry">quarry</a>, not knowing that the bones belonged to the same skeleton?