Charley, you're right about when it was found but my (admittedly selective) memory is that it wasn't dated until Edmund Gill got to it in the 60s; it was the dating of it and the dating of Kenniff Cave finds (I suspect you didn't go quite that far north in FNQ) at around the same time that put a rocket under Oz prehistory.

And it was around that time that Albert Masola published detail of a drawing that was regarded as the origin (among Aboriginal stories) of the bunyip. So don't go dismissing bunyips too quickly.

Cheers, Rowan