科学家们发现了3400万年前生活在泰国的一种巨型啮齿动物的化石，这表明巨大的啮齿动物进化得比以前认为的要早得多。命名为Yakamys sirindhornae ，古老的动物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 anima