47 minutes ago · Nature · hide

The platypus already seems determined to keep zoologists busy.It is a mammal that lays eggs. It has a broad bill, webbed feet and dense fur. Males possess venom-delivering spurs on their hind legs. A perfectly ordinary afternoon in Australian natural history.Then the fossil record adds teeth.In 2013, researchers described Obdurodon tharalkooschild from a distinctive fossil molar found at

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