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flag Australian scientists find 105-million-year-old platypus ancestor fossil.

flag Australian paleontologists discovered a 105-million-year-old fossil bone in Victoria, believed to be from an ancient monotreme ancestor to the platypus or echidna. flag Recent analysis using neutron radiography showed the bone’s internal structure resembles that of a platypus, suggesting the creature was aquatic. flag This supports the theory that monotremes evolved from a common, water-adapted ancestor.

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