'Killer kangaroo' evidence found

Palaeontologists digging in northern Australia have found fossil evidence of several new species - including a "killer kangaroo".

The flesh-eating marsupial would have lived between 10 and 20 million years ago, scientists say.
The research team has also unearthed evidence of a large carnivorous bird dubbed the "demon duck of doom".

"There were meat-eating kangaroos with long fangs, and galloping kangaroos with long forearms, which could not hop."