For most of the past 300 million years, the world’s continents were interlinked as the supercontinents Pangaea and then Gondwana. Around 50 million years ago,
"A rich accumulation of bones, many far larger than any modern-day native mammal, was excavated in 1909 from Mammoth Cave in Australia's south-west. The treasur
Recent classifications of Australian birds have been limited to lists of "species" which are inadequate as biodiversity indicators. The Directory of Australian