Other features, however, show experts that Pakicetus is a transitional form between a group of extinct flesh-eating mammals, the mesonychids, and cetaceans.
然而，专家认为巴基鲸是已经灭绝的食肉哺乳动物中爪类和鲸类之间的过渡物种。
They believed whales had descended from mesonychids.
他们认为鲸是爪兽的后裔。
They believed whales had descended from mesonychids.
他们认为鲸是爪兽的后裔。
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