Drying and dying in Australia: extraordinary creatures and climate change 15 million years ago

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Australia's globally distinctive mammals were confronted 15 million years ago by a climate plunge from lush greenhouse to dry icehouse conditions. In northern Queensland, in the World Heritage-listed cave known as AL90, fossil-rich deposits span this interval of change. Entombed are dozens of extraordinarily well-preserved skulls and articulated skeletons including a growth series from pouch-young to adults of a rare, possibly sloth-like marsupial as well as more familiar kangaroos, thylacines and bats. Our fossil research will help align Australian records of biotic change with global palaeoclimatic events and provide a benchmark for measuring the nature and rate of environmental and biotic change that continues to transform our nation.