Here's a fun little look at the original run of the Herculoids (forget the tame Space Stars series). They talk to many current animators who know what they are talking about. It's interesting they mention "One Million Years, BC" since I think that was a huge influence on several stories and designs for many of the H-B shows.
They forget that Mightor had animated dinosaurs the same year the Herculoids did, and Dino Boy debuted the year before. No biggie. Yes, I know the doc says the name of the planet is "Quasar" but that was a revision in the 80s.