Their ancestors date back almost 500 million years on the evolutionary tree.

它们的祖先在进化树上可以追溯到近5亿年前。

But its exact age and place on the evolutionary tree are not clear.

但其确切年龄和在进化树上的位置尚不清楚。

To better understand the migrations of duckbill dinosaurs, Longrich and his colleagues reconstructed their evolutionary tree.

为了更好地理解鸭嘴龙的迁徙，隆瑞奇和他的同事重建了他们的进化树。

She said more research is needed to find the being's rightful place on the evolutionary tree.

她说，需要更多的研究来找到这种生物在进化树上的正确位置。

What isn't arbitrary is that some mass extinctions alter the evolutionary tree of life far more radically than others.

客观的事实是，某些灭绝事件比其他几次灭绝更显著改变了演化树的类别。

The researchers lined up the fragments with DNA sequences of living species to figure out where they belonged on the evolutionary tree.

研究人员将这些片段与现存物种的DNA序列比对，以确定它们在进化树上的位置。

No, I said animalistic. Of course we're all animals, but some of us have climbed a little higher on the evolutionary tree.

不，我是说兽性。当然我们都是动物，只不过我们当中一些人在进化树上爬得更高一些。

The challenge is sorting which of them lie on other branches–dead ends–on the evolutionary tree, and which are part of our story.

挑战在于分清哪些是在进化过程中的其他分支上的死胡同，以及哪些是我们故事的一部分。

You might have noticed some of the evolutionary trees in this video were created by an app.

您可能已经注意到该视频中的一些进化树是由应用程序创建的。

And since then, there’s been a lot of controversy about where they fit on the human evolutionary tree.

从那以后，关于它们在人类进化树上的位置存在很多争议。

They have this hard won superpower that they've probably had since before three branches on our evolutionary tree.

他们拥有这种来之不易的超能力，可能从我们进化树上的三个分支之前就已经拥有了。

And based on these haplogroups, they used mathematical models to come up with an evolutionary, or phylogenetic, tree.

基于这些单倍群，他们使用数学模型提出了进化树或系统发育树。

The origins of that itch you're feeling right now extend way back on the evolutionary tree, and we've only scratched the surface of knowing how it all works.

你现在感受到的痒的起源可以追溯到进化树上，我们只知道它是如何工作的表面。

Until we find and study more fossils, it will be hard to know for sure where Homo floresiensis belongs on the evolutionary tree.

在我们找到并研究更多的化石之前，很难确定弗洛勒斯人属于进化树的什么位置。

It's a garbled record — but by reading closely, we've been able to glean enough information to refine the evolutionary trees we started drawing long before genome sequencing was around.

这些记录杂乱无章——但通过细致的研究，我们已经能够收集到足够的信息来完善我们在基因组测序出现之前很久就开始绘制的进化树。

Okay, not to, like, denigrate the  scientists who, like, put a lot of—I think it's super fascinating sort of the evolutionary tree  that they're building.

好吧，不要诋毁那些科学家，比如，他们放了很多——我认为这是他们正在建造的进化树的超级迷人。

Tail clubs are pretty rare in the animal kingdom -- no animals have them today -- but they've popped up several times within the evolutionary tree of tetrapods.

尾巴俱乐部在动物王国中非常罕见——今天没有动物拥有它们——但它们在四足动物的进化树中出现过几次。

By comparing which animals demonstrate unlimited associative learning today, it is also possible to trace back through the evolutionary tree to guess which of our ancestors first evolved this ability and, therefore, when consciousness first evolved on Earth.

通过比较今天哪些动物表现出无限的联想学习能力，也有可能追溯进化树，猜测我们的祖先是谁首先进化出这种能力的，因此，意识是什么时候在地球上进化出来的。

And so all we have to do is kind of connect the dots across an evolutionary tree, and that's going to tell us where the virus has been in the past and how it spread across the landscape.

因此，我们所要做的就是将进化树上的点连接起来，这将告诉我们病毒过去在哪里， 以及它是如何在整个景观中传播的。

DNA contains a record of the evolutionary relationships between all organisms. It’s a garbled record – but by reading closely, we’ve been able to glean enough information to refine the evolutionary trees we started drawing long before genome sequencing was around.

DNA 记录了所有生物之间的进化关系。这是一个乱码的记录——但通过仔细阅读，我们已经能够收集到足够的信息来完善我们在基因组测序出现之前很久就开始绘制的进化树。