Evolutionary biology has never postulated descent of man from the orangutan or the gorilla; but has always postulated the same thing, that humans descended via common descent from other apes, and that our most recent common ancestor is shared, among living apes, with the chimpanzee.
Talk about a strawman. Why do you feel you have to invent untruths about evolutionary biology?
Perhaps you time would be better served actually LEARNING something about it rather than inventing untruths about it.
But if you wanted to learn something, instead of proudly insisting you already know, you wouldn't be a creationist.
All that evolutionary biology needs is circular logic saying that it is true, everything else is interchangeable and easily replaced.
Now all the evolutionist hyperbole aside, the latest missing link is obviously another ape. It was 4’ tall, had long arms and hands and a very small brain.
For one thing, unlike human species but like other australopithecines, A. sediba had a very small brain. The fossil species also had long ape-like arms with primitive wrists that were well suited for climbing trees.