Yep, the jack of all trades does better in an unpredictable crisis...and life on earth is just one damned thing after another!(or was that "history"?)<quoted text>
Yes, they have been found right here in SA, fascinating stuff. Tough customers, were those. I have been up close with one of those beauties (I am being overly dramatic...I mean the fossil).
What the fossil record tell us, is that when disaster strikes (read: mass extinction), then it is the generalists, the all-rounders, that makes the cut.
Coelophysis was this. He wasn't as imposing as T-Rex, Spinosaurus or Giganotosaurus, but he could survive on scraps. Coelophysis could survive on insects or small fish, if push came to shove, which it did. T-Rex and his band of snarling Cretaceous terrorists could not. When their food source vanished, they were too specialised to do anything about it.
Evolution of evolveability...takin' it to another level.