Speaking of super-predators from the past, Natural History Magazine has a short article describing Australian rock art that may depict the extinct marsupial lion, Thylacoleo carnifex:
Kim Akerman, an independent anthropologist based in Tasmania, says the painting unmistakably depicts a marsupial lion.
It shows the requisite catlike muzzle, large forelimbs, and heavily clawed front paws. And it portrays the animal with a striped back, a tufted tail, and pointed ears.
The image is described in a brief and readable report in the March issue of Antiquity.
