JAIME CHIRINOS / SCIENCE PHOTO LIBRARY JAIME CHIRINOS / SCIENCE PHOTO LIBRARY
Thylacoleo. Artwork of a pair of Thylacoleo, also known as the 'marsupial lion' or 'pouch lion'. This extinct marsupial lived between 2 million and 30,000 years ago in Australia. When alive, an adult measured about 114 centimetres from head to tail and weighed around 130 kilograms. It had extremely powerful forelimbs and jaw strength to enable it to hunt prey much larger than itself. Its front and hind paws also had unusual opposable thumbs with huge claws.
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