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Figure 5. Comparison of North American and Australian megafaunal extinctions. From Murray 1991, in P.V. Rich et al., Vertebrate paleontology of Australasia.

pect that scarcity of Megalania fossils may be attributable to a cannibalistic habit seen in living Komodo dragons (Murray and Vickers-Rich 2004). Australia also had two terrestrial crocodiles, a giant python, and (although not a carnivore) a giant "horned" land turtle.

The largest marsupials of Australia and New Guinea, the diprotodons, were roughly the shape and weight of a small rhinoceros. Early in near

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