Which of the following is extinct from Australia?

Thylacine (Thylacinus cynocephalus) also known as the Tasmanian Tiger, this marsupial was native to Tasmania, Australia, and New Guinea. It became extinct in the wild in the early 20th century, with the last known individual dying in captivity in 1936.

Quagga (Equus quagga quagga) was native to South Africa. 
Passenger Pigeon (Ectopistes migratorius) was native to North America.
Steller's Sea Cow (Hydrodamalis gigas) was native to the Bering Sea.