Drop bears were very much real 20-10 million years ago (and still true apparently in SA.) google marsupial lion (images). There is even a painting of one from the Kimberly so they didn't disappear that long ago. Amazing fused molars turned into giant scissors that would have no trouble shearing bone.
I see they've done some indirect tracking too -
"Analysis of the collected data provides valuable insights into the hunting behaviour of drop bears and has implications for a better understanding of the geographical distribution of other rare species, including hoop snakes and bunyips."
Are they going to add the Death Watch Beetle savage little things eat electrical wire
We ran into a group of Kangawallafoxes didnt seem to mind us being there.