text: Ancient kangaroos did not hop | Blouin News
  Ancient kangaroos did not hop
  Oct 15, 2014, 10:48 PM EDT
  Recent research suggests that ancient kangaroos -- or giant marsupial relations to modern-day kangaroos -- did not hop, and instead just walked on two legs. They lived about 100,000 to 30,000 years ago. LiveScience elaborates:
  Telegraph UK quotes one of the researchers:
  As well as discovering that their hind limbs and spines were different to the red and grey kangaroos of today, the team realised that it was unlikely that an animal that weighed 550lbs would be able to hop. It is unknown if they evolved to be bipedal or they originally jumped but became too large.
  "I don't think they could have gotten that large unless they were walking," said Christine Janis, professor of ecology and evolutionary biology at Brown University, US.
  "We need to consider that extinct animals may have been doing something different from any of the living forms, and the bony anatomy provides great clues."