AAP: THE world is facing a mass extinction event that could be greater than that of the dinosaurs, new Australian research shows. Macquarie University palaeobiologist Dr John Alroy used fossils to track the fate of major groups of marine animals throughout the Earth’s history. He compiled data from nearly 100,000 fossil collections worldwide, tracking the fate of marine animals during extreme extinction events some 250 million years ago. The findings, published this week in …