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最近,一只古老的蛙化石引起了国内外科学家的广泛关注。中国科学院古脊椎动物与古人类研究所的学者将它命名为“三燕丽蟾”(见封二彩图)。这块完整而精美的标本发现于辽宁省的西部,它是我国已知最早的蛙类,生存于距今至少1亿2千万年前的中生代中期,与大大小小的恐龙生活在同一时代。完整蛙化石十分罕见蛙类化石极其罕见,原因是它们过着水陆两栖的生活,死亡后肉体还没有来得及被沉积的泥沙掩埋就很快腐烂、分解了。同时,蛙类的骨骼细弱,
Recently, an ancient frog fossil has drawn wide attention from domestic and foreign scientists. Academics of the Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences named it “San Yan Lai Toad” (see the cover two-color map). This complete and exquisite specimen was found in the western part of Liaoning Province. It is the earliest frog species known in China and lived in the mid-Mesozoic at least 120 million years ago. It lives in the same era as dinosaurs of all sizes . Complete frogs are rare Rana fossils are extremely rare, because they live amphibious life, after death, the body has not had time to be deposited sediment soon decay, decomposed. At the same time, the bones of frogs are weak,