That tyrannasaurus rex is about to take on those stegosauruses, including a cute baby one. Tyrannasaurus rexes were amazingly good hunters.
You can tell just how amazingly good hunter tyrannasaurus rexes were, because stegosauruses died out about 150 million years ago and tyrannasaurus rexes didn't appear until 70 million years ago at the earliest. Time is clearly no obstacle between a tyrannasaurus rex and its prey.
Of course, given that we're closer in time to tyrannasaurus rexes than tyrannasaurus rexes were to stegasauruses, that puts us in danger too.