Queensland has produced fossils of Early Cretaceous dinosaurs and other reptiles. About 100 million years ago, an area now known as the "Fossil Triangle" was covered by sea, as revealed by the fossils of pliosaurs found there. The bodies of land-dewelling dinosaurs are also in this area—perhaps the victims of floods that swept them into the sea. Eventually, the sea retreated, leaving its sediment to form soft limestone, from which Minmi, Muttaburrasaurus and a near-perfect pliosaur have been excavated.
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