Cyrtopone
... that species of the extinct ant genus Cyrtopone are noted for having small heads?
... that species of the extinct ant genus <i id="mwAm0"><b id="mwAm4"><a href="./Cyrtopone" id="mwAm8" rel="mw:WikiLink" title="Cyrtopone">Cyrtopone</a></b></i> <i id="mwAnA">(example pictured)</i> are noted for having small heads?