What extinct animals lived in the outback?
Australia was the home to many species of extinct animals including 23 bird, four frog and 27 mammal species. These include the tammar wallaby, big-eared hopping mouse, and the lake peddler earthworm.
Animals have always been going extinct, that's the way of nature. 99% of all animals that have ever lived are now extinct. But man's activities have accelerated extinction in many cases, by overhunting, habitat destruction, pollution, and introduction of non native species into areas where they didn't belong, where native animals had no defense for them.