Bucephalus
... that the name Bucephalus, meaning "ox head", was given to a genus of trematodes because their cercaria larva seemed to have horns?
... that the name <i id="mwAwY"><b id="mwAwc"><a href="./Bucephalus_(trematode)" id="mwAwg" rel="mw:WikiLink" title="Bucephalus (trematode)">Bucephalus</a></b></i>, meaning "ox head", was given to a genus of <a href="./Trematoda" id="mwAwk" rel="mw:WikiLink" title="Trematoda">trematodes</a> because their <a class="mw-redirect" href="./Trematode_lifecycle_stages#Typical_lifestyle_stages" id="mwAwo" rel="mw:WikiLink" title="Trematode lifecycle stages">cercaria</a> larva <i id="mwAws">(pictured)</i> seemed to have horns?