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On display are the opalized remains of a pliosaur , a prehistoric marine reptile, as well as the opalized remains of other extinct plant and animal life that existed in Australia more than 100 million years ago.
One of the key attractions at the exhibition, which runs until June 11, is a gigantic pliosaur .
An ancient animal that swam with pliosaurs 100 million years ago, and whose numbers once were so vast they could impede ships, the leatherback is among the most endangered of sea turtles.
But pliosaurs had short necks and massive jaws that would have been capable of lifting a car and biting it in half.
Although many of them had long necks and small heads, one group, the pliosaurs , had short necks and large heads.
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