And they are known from the late Miocene, about eight million years ago.

它们出现在大约 800 万年前即中新世末期。

And it was only one of many species of carnivorous whales in the middle Miocene.

而且，它只是中新世中期众多食肉鲸类中的一种。

Stupendemys lived about 7-13 million years ago during the Miocene Epoch near modern South America.

骇龟生活在大约700-1300万年前的中新世时期，靠近现代的南美洲。

Discokeryx lived in open grasslands with small groups of trees during a time known as the Miocene period.

在第三纪中新世时期，獬豸盘角鹿生活在开阔的长有小片树木的草原上。

Paleoanthropologists found the newly identified diurnal owl lived around 6 million years ago in the late Miocene period.

古人类学家发现这种新发现的昼夜猫头鹰生活在大约 600 万年前的中新世晚期。

This major climatic shift likely caused the extinction of many Miocene ape lineages.

这种重大的气候变化可能导致许多中新世猿类谱系灭绝。

Many other lineages of apes thrived during the Miocene.

许多其他的类人猿谱系在中新世期间繁衍生息。

So what caused this really bad day in the Miocene?

那么是什么导致了中新世这个非常糟糕的一天 呢？

Now, being so big probably helped them deal with large Miocene predators, like saber-toothed barbourofelids.

现在， 体型如此之大可能有助于它们对付大型中新世食肉动物，例如剑齿虎科动物。

The largest are the thunderbirds called Dromornis stirtoni. And they are known from the late Miocene, about eight million years ago.

体型最大的雷鸟是史氏雷啸鸟(Dromornis stirtoni)。生活年代为中新世晚期，约为800万年前。