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Tasmanian tigers, also known as thylacines, lived in Australia for a long time. Their population suddenly fell sharply in the 1920s, leading to their extinction. The last known animal died in September 1936 in a zoo in Tasmania.
At a dig site in America, palaeontologists want to find out how the Tyrannosaurus Rex became the king of the mighty primeval lizards.
Excavations in Los Angeles' La Brea Tar Pits, pits filled with natural asphalt, could help unravel the mystery of how the sabre-toothed tiger hunted its prey.