Sydney, Oct 5 (IANS) Australia is one of the world leaders in mammal extinctions and 10 species have been identified as among the most imperilled, the country’s national environmental organisation said on Saturday. The Australian Conservation Foundation (ACF) has consulted a range of ecologists and biologists and identified 10 species as at serious risk of extinction, the organisation said in a media release. They are Tasmania’s Maugean skate, the swift parrot, the regent honeyeater, a small wallaby called the Top End nabarlek, the Baw Baw frog, Victoria’s grassland earless dragon, the central rock-rat, the Kangaroo Island assassin spider and two…