I once caught a few scenes from one of those pornographic parodies for this. I think it was called the Flinbones...
Anyways, I remember thinking its production design was actually superior to the studio effort. Despite the massive budget differences, the art direction for the Adult film felt far more organic and was arguably more effective in capturing the prehistoric milieu.
The actress playing Betty was really impressive too. Her performance was undoubtedly more accomplished than
O'Donnell's work. It was nuanced and measured and featured a tremendous amount of pathos.
Plus, she impressively managed to maintain the character's distinctive trademark giggle even while being sodomized by a gargantuan reproductive organ, courtesy of the actor playing Barney.