They, too, have become extinct. So we have no evidence that rhynchosaurs have out- competed dicynodonts and profited by their crime, becoming successful in their turn. Similarly, the traversodontid herbivores have also dwindled somewhat in number. In fact, herbivorous niches are now dominated by a completely new set of forms, which were not around before, and which have seized their opportunity to take over new niches after the old groups became extinct. What normally happens is that the predator overeats its prey which consequently dwindles in number.
Prey are much more difficult to find and so predator numbers also start to dwindle.
This allows the prey respite in which to recover their numbers. As they once again become easier to find, they can support more predators, so the number of predators increases again. It is thought that this cycling of predator and prey is a much more likely outcome of intense predation than is extinction of the prey. So we cannot conclude that any of the other animals around was directly responsible for the demise of the dicynodonts. We can find no guilty party here.