LifeEarly fossil identified as new species of Tyrannosaurus A dinosaur known only from a partial skull has been dubbed Tyrannosaurus mcraensis, adding a new twist to long-running debates about putative relatives of Tyrannosaurus rex News
LifeAncient mini koala may help solve mystery of early marsupial evolution Fossils from a 25-million-year-old koala that may have weighed just 2.6 kilograms might help us understand how early marsupials diversified News