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Perameles bowensis
https://australian.museum/learn/australia-over-time/extinct-animals/perameles-bowensis/

Perameles bowensis, from the Pliocene of New South Wales, is one of the oldest and most primitive of the Peramelidae, the family to which most Australian bandicoots belong.

The Pleistocene Epoch (2.5 million to 11,700 years ago)
https://australian.museum/learn/australia-over-time/evolving-landscape/the-pleistocene-epoch/

During the Pleistocene (2.5 million to 11,700 years ago) the word had many examples of large animals that are collectively known as Megafauna. Australia was close to its current position, but sea levels were much lower. Humans may have first arrived in Australia during this time.

Euryzygoma dunense
https://australian.museum/learn/australia-over-time/extinct-animals/euryzygoma-dunense/

Euryzygoma dunense

Dinosaurs - Platypterygius longmani
https://australian.museum/learn/dinosaurs/fact-sheets/platypterygius-australis/

Platypterygius longmani was an ichthyosaur, a dolphin-like marine reptile that roamed the Eromanga Sea of inland Australia during the Early Cretaceous.

Dinosaurs - Muttaburrasaurus langdoni
https://australian.museum/learn/dinosaurs/fact-sheets/muttaburrasaurus-langdoni/

Muttaburrasaurus was a large, plant-eating ornithopod from the Early Cretaceous of eastern Australia.

Liasis dubudingala
https://australian.museum/learn/australia-over-time/extinct-animals/liasis-dubudingala/

Liasis dubudinala is the largest snake known from Australia, estimated to have been about 9 metres in length. The only known specimen of Liasis dubudinala was found at Bluff Downs in northeastern Queensland, and is Pliocene in age (about 4.5 million years old)

Dinosaurs - Kambara implexidens
https://australian.museum/learn/dinosaurs/fact-sheets/kambara-implexidens/

Kambara implexidens, from the early Eocene of Queensland, was a mekosuchine, an ancient group of primitive Gondwanan crocodiles.

Chunia illuminata
https://australian.museum/learn/australia-over-time/extinct-animals/chunia-illuminata/

Chunia was a primitive ektopodontid, a distinctive group of Cainozoic Australian possums that may have been specialized seed-eaters. Ektopodontids, first thought to be monotremes, had short faces, large, forward-facing eyes and the most unusual and complex teeth of any marsupial.

Tingamarra Alamitophis
https://australian.museum/learn/australia-over-time/extinct-animals/alamitophis-tingamarra/

Alamitophis tingamarra was a small Eocene madtsoiid, an extinct family of primitive snakes known mainly from Gondwana. Madtsoiids have the longest fossil record of any group of snakes, with a record that stretches from about 90 million to 100,000 years ago.

Paljara tirarense
https://australian.museum/learn/australia-over-time/extinct-animals/paljara-tirarense/

Paljara tirarense was a small ringtail possum (family Pseudocheiridae) from the early Miocene of South Australia and northwestern Queensland. Ringtail possums were once much more diverse than they are today, distributed across many now-dry parts of Australia that were forested during the Cainozoic.