Which wallaby was thought to be extinct by 1930 but was later found on Kawaw island?

The wallaby thought to be extinct by 1930 is the Bennett's wallaby, also known as the Bennett's kangaroo or red-necked wallaby. It was rediscovered on Kawaw Island, highlighting the species' survival beyond what was previously believed. This rediscovery sparked interest in conservation efforts for this and other similar species.