1. Extinct but already fully marine cetaceans are known from the fossilrecord.
从化石记录中可以了解到一些已经灭绝、但已经完全变成海洋生物的鲸目动物。
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2. The fossilrecord shows that many species have endured for millions of years—so why shouldn't we?
化石记录显示，已经有许多物种存活了数百万年——那么我们为什么不能呢？
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3. However, for older sequence of evolutionary development, estimates based on parts in the fossilrecord.
然而，对于更古老的进化序列，估测则是基于化石记录的部分。
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4. Why does the fossilrecord not document the series of evolutionary changes during the evolution of animals?
为什么化石记录没有记录动物进化过程中的一系列进化变化？
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5. I think our discussion of sauropods will illustrate what we can learn by comparing the fossilrecord to modern animals.
我认为，对蜥脚类动物的讨论将解释我们通过比较化石记录和现代动物所了解到的东西。
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6. The fossilrecord suggests that there was an abrupt extinction of many plants and animals at the end of the Mesozoic era.
化石记录表明，在中生代末期，许多动植物突然灭绝。
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7. We can make a very good estimate from the fossilrecord that humans probably evolved naked skin around a million and a half years ago.
根据化石记录，我们可以更准确地判断出：人类可能在大约150万年前进化出了裸露的皮肤。
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8. We find evidence of such extended events in the fossilrecord, which affords glimpses into the breakup of formerly continuous environments.
我们在化石记录中找到了这种扩展事件的证据，这让我们得以一窥先前一直持续不断的环境分裂现象。
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9. Charles Lyell made a good estimate of the Tertiary Period from the fossilrecord, but his method could not be extended to earlier geological periods.
查尔斯·莱尔根据化石记录对第三纪作出了很好的估计，但他的方法不能扩展到更早的地质时期。
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10. Many species appear to remain unchanged in the fossilrecord for millions of years—a situation that seems to be at odds with Darwin's model of continuous change.
许多物种似乎在数百万年的化石记录中都保持不变——而这种情况似乎与达尔文的持续变化模型不一致。
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11. The fossilrecord indicates that in all the time that animals have inhabited Earth, there have been five great mass extinctions, dinosaurs being the most recent.
化石记录表明，在地球有动物居住的所有时期，已经有五次大灭绝发生，恐龙是最近的一次。
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12. Such changes are all but invisible over the short time scale of modern observations, and, it is argued, they are usually obscured by innumerable gaps in the imperfect fossilrecord.
13. Unfortunately this revelation about the hippopotamus apparently contradicts the fossilrecord, which suggests that the hippopotamus is only a very distant relative of the whale, not an ancestor.
很不幸，关于河马的这一发现显然与化石记录相矛盾，化石记录表明河马只是鲸鱼的一个远亲，并不是祖先。
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14. The punctuated equilibrium hypothesis attempts to explain a curious feature of the fossilrecord—one that has been familiar to paleontologists for more than a century but has usually been ignored.
