Agujaceratops mariscalensis (Dinosauria: Ceratopsidae: Chasmosaurinae) postorbital horn from the WPA quarries, Aguja Formation (Late Cretaceous: Campanian) Big Bend National Park, West Texas. From the University of Texas Austin collections. Photo by Nick Longrich.
<a href="//commons.wikimedia.org/wiki/User:NickLongrich" title="User:NickLongrich">NickLongrich</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>