Fossil hunters Down Under have pieced together the story of a colossal prehistoric raptor?"a bird so huge its talons could have killed a kangaroo. The bones of a giant avian were collected from South Australia's Mairs Cave by cavers back in 1956 and 1969. After long delays, new research conducted by scientists from Flinders University has ascertained the bird's species, making the discovery finally "official." They named the raptor dynatoaetus gaffae, or Gaff's powerful eagle.