Even Tyrannosaurus Rex has rules of etiquette.
Grab The Deceased* Triceratops Firmly By The Frill.
*Please do not question how the Triceratops met its end.
The folks over at Nature put together a step-by-step guide to eating a Triceratops. Now when you time travel, at least you'll know the proper cultural norms.
Hat tip to Gizmodo.
While Sinking Your Back Claws Into The Hide, Pull The Frill Briskly Away.