It's worth noting that sampling bias might be a factor here. Fossil marsupials are generally identified by teeth, while reptiles tend to be postcranials. One individual megalania had a lot of vertebrae, so it probably isn't surprising that those are the most commonly found bits.

I suspect that Thylacoleo was more common in the southern parts of Australia (which also includes most of the documented Pleistocene assemblages), while big reptiles were more common in the tropical north.

Also, "munted" is the new adjective for fossils of less-than-ideal preservation.

I learnt that multiple Aussie palaeos apparently have beef with the Essendon Football Club.

…or maybe a bonebed with multiple Thylacoleo around a Tenontosaurus? 😁

What would be acceptable evidence? A trackway, I suppose.

Some media coverage, including an mention of the infamous 'drop croc'.
www.theguardian.com/environment/...

I know of one. Not sure if I'm meant to say who at this point though. Wait for the credits after the episode.