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The discovery of butterflies in a warm, wet carbon-trap island inAustralia had seemed a minor milestone in the history of palaeontology. The early humanspecies were small, probably weak and short-lived. But newideas about the evolution of insect life suggested that they may havebeen survivors, in a way that the supposedly sluggish dinosaurs werenot.
A few weeks before the discovery in 2003, a team of Australian geologists had started prospecting for fossil crocodiles in large riverbanks, which were expecting to find more dinosaurs. But theseprospectors kept finding crocodiles, and roamed over a large area, havediscovered what turned out to be some of the earliest crocodileremains in Australia. The specimens from these teams are not fossil crocodiles, but fossils of contemporary crocodilesthat walked with dinosaurs.
As well, in 2005 scientists began trying to put together a chronicle ofthe evolution of life on Earth, based on observations from aroundthe world. A few years on, these surveys have revealed startlingand unexpected facts. The earliest known evidence of the liverwortplant came from deposits about a billion years old. Some of thetransitions between different life-forms on Earth seem to have beenanalmost instantaneous transition between one form of life and another.
The work started by Lucy's team was matched in 2007, on a fewhundred thousand metres of the Messel site in Germany, by a group ofBritish scientists. On the 100,000-year-old site, which had been found 16years before, they discovered one of the best-preserved reconstructionsof a mammoth, a modern elephant, and a few prehistoric horses.
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