A “cavegirl” character watches a Tyrannosaurus and Triceratops battle while hiding behind a tree. It must be a frightful thing to witness close up, but whomever wins, she’ll have plenty to scavenge from the loser’s carcass.
And yes, I got the idea from a scene in the old caveman movie One Million Years BC, wherein Raquel Welch and John Richardson’s characters hide from a battle between a Triceratops and a Ceratosaurus.