Gallimimus bullatus, <a href="https://pl.wikipedia.org/wiki/Muzeum_Ewolucji_PAN" class="extiw" title="pl:Muzeum Ewolucji PAN">pl:Muzeum Ewolucji PAN</a> - skeleton copy, original is back in Mongolia
<a href="//commons.wikimedia.org/wiki/User:Hiuppo" title="User:Hiuppo">Hiuppo</a>
CC BY 3.0
<span class="int-own-work" lang="en">Own work</span>