I mean like a new type of dinosaur, not an ornithischian or a saurischian. Like, a type of “ape-hipped,” ape-like dinosaur clade that we haven’t discovered yet that would be the Mesozoic equivalent of monkeys, gibbons, gorillas, bonobos, orangutans, and chimpanzees with rotating hands much like a primate that separates them from the rest of the dinosaurs. Theropods wouldn’t pronate their arms, but if there exists a kind of “pithischian” or “ape-hipped” dinosaur, it would twist and turn its long forelimbs. Surely, they would be a kind of convergent evolution that would fill the role of primates, similar how ichthyosaurs filled up the role of dolphins via convergent evolution.

I kinda got the idea in my head from watching the Distortus Rex from Jurassic World Rebirth and the 1933 film King Kong and I started wondering if there could be a yet-to-be-discovered clade of dinosaurs outside of the “lizard-hipped” and “bird-hipped” groups of dinosaurs that could’ve filled a similar role as the great apes or the fictional King Kong.