Unfortunately both signifera and parinsignifera can have that lyrate dorsal pattern and the best way to id these two is to provide a shot of the belly. Based on this image I would have left it as Crinia sp. Worth remembering for next time. It is probably parinsignifera but if you can remember if the belly was granular grey or marbled black and white then we could take it further.
I did try to flip this frog in order to get the belly shot, but I was unsuccessful after a few attempts so gave up. From the few glimpses I got, i would say uniform and lightish grey :).