A jawbone was found in 1978 in a fossil site known as the Punch Bowl near the town of San Remo.
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During this time the area was below the Antarctic Circle, and temperatures were relatively cool for the Mesozoic.
Much as in Australia today, East Gondwana played host to many endemic animals, which included many relict species of families that had gone extinct in the rest of the Cretaceous world, among them giant Amphibian labyrinthodonts, such as Koolasuchus.