它是一种特殊的动物，叫做有袋动物。
Kangaroos are part of a special category of animals, called marsupials.
同一地区另一个著名的坟场是个叫做惠灵顿洞穴的地方，人们在那里第一次发现了双门齿兽——目前已知的最大的有袋类动物。
Another famous boneyard in the same region is a place called Wellington Caves, where Diprotodon, the largest known marsupial, was first discovered.
古生物学家彼得·默里在澳大利亚北部研究过一幅岩画，画中显示的非常像是一种被叫做袋貘的巨型有袋动物。
Paleontologist Peter Murray has studied a rock painting in far northern Australia that shows what looks very much like a megafauna marsupial known as Palorchestes.
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