The redneck strike again.

[Whateverist]

At the risk of seeming anthropocentric I wonder how much some of our other features would also have been needed, like opposable thumbs and pack living. I'm not aware of any dinosaurs which brachiate. But if they had survived to live in the same times that led to simians they might have made it up there. Then, during dryer times, they might have found themselves with an opposable digit or two walking around upright and living gregariously and cooperatively with their own kind. Hard to say which features are optional.