Prehistoric vertebrates of Oceania

Koolasuchus is an extinct genus of brachyopoid temnospondyl in the family Chigutisauridae. Fossils have been found in Victoria, Australia and date back to 125-120 million years ago during the Barremian and Aptian stages of the Early Cretaceous, making Koolasuchus the youngest known temnospondyl. It is known from several fragments of the skull and other bones such as vertebrae, ribs, and pectoral elements. The type species Koolasuchus cleelandi was named in 1997. K. cleelandi was adopted as the fossil emblem for the state of Victoria, Australia on 13 January 2022.

Paracyclotosaurus (meaning "Near Wheeled Lizard") is an extinct genus of temnospondyl, which would have appeared similar to today's salamander – but much larger, measuring up to long and weighing between . It lived in the Middle Triassic period, about 235 million years ago, and fossils have been found in Australia, India, and South Africa.

Waipatia is an extinct genus of odontocetes from the late Oligocene (Chattian) of New Zealand.

Ilariidae is a family of extinct vombatiform marsupials. Most ilariids are found in the middle Tertiary faunal assemblages of South Australia. Ilaria illumidens is the best-preserved representative of this extinct clade.

genus of amphibians (fossil)

Volia is an extinct monospecific genus of mekosuchine crocodylian closely related to Mekosuchus and Trilophosuchus. Volia is known from a collection of largely fragmentary remains including skull bones and limbs recovered from the Voli Voli and Wainibuku Caves on Viti Levu (Fiji), with similar remains having been found on Naigani. It was around long, making it the largest predatory animal on the island and subsequently most likely the apex predator of the Pleistocene ecosystems of Fiji. It may have fed on giant iguanas, flightless birds or even fish. Like its closest relatives, it may have bee