Extinct but already fully marine cetaceans are known from the fossil record.
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。
The fossil record 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？
However, for older sequence of evolutionary development, estimates based on parts in the fossil record.
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。
Why does the fossil record 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？
I think our discussion of sauropods will illustrate what we can learn by comparing the fossil record 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。
The fossil record 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。
We can make a very good estimate from the fossil record 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。
We find evidence of such extended events in the fossil record, 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。
Charles Lyell made a good estimate of the Tertiary Period from the fossil record, 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。
Many species appear to remain unchanged in the fossil record 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。
The fossil record 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。
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 fossil record.
这些变化在现代观测短时间范围内几乎是看不见的，而且，有人认为，这些变化常常被不完善的化石记录中的无数空白所掩盖。
Unfortunately this revelation about the hippopotamus apparently contradicts the fossil record, 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。
The punctuated equilibrium hypothesis attempts to explain a curious feature of the fossil record—one that has been familiar to paleontologists for more than a century but has usually been ignored.
断点平衡论试着去解释化石记录的一个古怪的特点——在超过一个世纪的时间里，这一特点已经为古生物学者所熟悉，但一直被忽视。
The fossil record of late Campanian tyrannosauroids of western North America has a geographic gap.
北美西部晚期的坎帕阶霸王龙的化石记录存在地理差异。
They disappear from the fossil record around 80 million years ago.
它们消失于8000万年前的化石记录中。
The fossil record showed evidence of life forms that no longer existed.
化石记录向人们出示了已灭绝物种存在过的证据。
There is a much better fossil record for mammals than for many other groups.
哺乳动物的化石纪录比别的类别的好的多。
Soft parts, like muscles and eyes, don't leave much behind in the fossil record.
像肌肉和眼睛这类柔软部分，在化石记录中未能更多的保留。
Signs of animals’regenerative abilities are scattered throughout the fossil record.
通过化石记录，有迹象表明动物的再生能力是不集中的。
The reptiles first appear in the fossil record around 98 million years ago, Wilson said.
Wilson说，这种爬行动物在化石记录里最早出现于9800万年前。
Yet despite more than a century of digging, the fossil record remains maddeningly sparse.
然而，尽管经过了一个多世纪的挖掘，化石的记录仍极其稀少。
Dinosaurs first appear in the fossil record during the Triassic period, some 230m years ago.
根据化石记载，恐龙最早出现在三叠纪期间，也就是大约2亿3000万年以前。
The creatures disappear from the fossil record of a region once it became colonized by humans.
某一地区一旦有人类居住，这里的大象和猛犸象就开始从化石记录里消失。
Ammonoids, with their tightly coiled, spiral shells, are also widespread in the Permian fossil record.
鹦鹉螺化石，这些螺旋状的贝壳，经常分布在二叠纪的化石群中。
The Ediacaran fossil record thus stretches the origins of animals to well before the Cambrian Explosion.
埃迪·卡拉化石的发现，将动物的形成时间从寒武纪又推早了不少。
Remarkably, we may already have good information about that locked away in the fossil record right here on Earth.
值得注意的是，在这方面我们脚下地球深处的化石记录应该已经给了我们很好的信息。
The fossil record of the Anthropocene will thus show a planetary ecosystem homogenised through domestication.
人类世的地质编录将因此显示，通过人类的活动，地球的生态系统被同质化了。
The mouth, tongue and throat are mainly made of soft tissue and so there is little evidence of them in the fossil record.
由于口腔、舌和喉主要由软组织构成，所以化石记录中几乎找不到他们。
The mouth, tongue and throat are mainly made of soft tissue and so there is little evidence of them in the fossil record.
由于口腔、舌和喉主要由软组织构成，所以化石记录中几乎找不到他们。
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