Well, this seals it. Just when I thought I'd made some sense of the notes I took while visiting the Painted Sharks, I spotted the nail in the proverbial coffin: Roos. A whole herd of giant Roos were just hopping about the countryside like they'd always been there.
As much as I love Roos, they just shouldn't be here, period. They evolved in Oz and Oz only sixty million years after the dinosaurs went extinct among a bevy of other marsupials. If I know any genus, it's this one, and Procoptodon should not exist here.
This island isn't an ecosystem, its a zoo.