In An Instant (2015)

S5E22 Deep in the Heart of Texarock

Fred and Barney team up with their families to confront a gang of cowasaurus rustlers who've been targeting Uncle Tex's ranch in Texarock. As they navigate the challenges of protecting the land and its prehistoric inhabitants, the Flintstones and Rubbles find themselves in a hilarious showdown against these crafty thieves.