# Scientists discover a giant 66-pound rodent that lived 34 million years ago

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1 outlet covering · First listed: ScienceDaily, Nov 10, 2026, 7:36 PM · Read it: <https://www.sciencedaily.com/releases/2026/11/261110042532.htm>

Scientists have uncovered fossils of a giant rodent that lived in Thailand 34 million years ago, revealing that enormous rodents evolved much earlier than previously thought. Named Yakamys sirindhornae, the ancient animal may have weighed around 66 pounds, roughly twice as much as other known rodents of its time.

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In the order they published:

- Nov 10, 2026, 7:36 PM: [Scientists discover a giant 66-pound rodent that lived 34 million years ago](<https://www.sciencedaily.com/releases/2026/11/261110042532.htm>) — ScienceDaily (Science news, United States)
  Scientists have uncovered fossils of a giant rodent that lived in Thailand 34 million years ago, revealing that enormous rodents evolved much earlier than previously thought. Named Yakamys sirindhornae, the ancient animal may have weighed around 66 pounds, roughly twice as much as other known rodents of its time.