Greg Cox wrote:
...there was a sequence where Vetri was cast out of her tribe because she was a blonde (!) and ends up taking shelter from a storm inside a giant egg shell. Along comes a myopic momma bronto who finds Vetri inside the egg and naturally assumes that this voluptuous blonde cavewoman in a fur bikini is a newborn baby brontosaurus and adopts her as one of her own . . . .
I swear by the great blazing orb in the sky that I'm not making this up!
have seen that film as a very young child, but I KNOW
I saw a retrospective about fantasy films not too many years ago that used part of that sequence. So I'm vouching for Greg.