Megalodon disappeared entirely from the fossil record, just as the Pliocene epoch gave way to the Pleistocene.

巨齿鲨在地球的历史中彻底消失了，就像地质时代从上新世过渡到更新世那样。

In addition, the sediment comes from a window of time during the Pliocene Epoch, when greenhouse gas levels were only slightly higher than they are today.

此外，这些沉积物形成于上新世窗口期，那时的温室气体水平仅比现在稍高一点。

Pimiento and her team used a climate forecasting model to recreate ocean temperatures during the Pliocene and Miocene, and compared those temperatures to where Megalodon had lived.

皮米恩托和她的团队使用一个气候预测模型来重现上新世和中新世期间的海洋温度，并将这些温度与巨齿鲨的生活地点进行比较。

In the Pliocene Epoch there was the leggy, sprinting Homotherium, and more recently, in the Pleistocene, we find the famous Smilodon.

在上新世时期，有长腿、奔跑的同兽，最近，在更新世，我们发现了著名的剑齿虎。

But these humid, heavily forested ecosystems gradually diminished through the Miocene and into the Pliocene epoch as Australia became drier over time.

但随着澳大利亚随着时间的推移变得更加干燥，这些潮湿、森林茂密的生态系统在中新世和上新世逐渐消失。

Only three species of these skin-shelled turtles are found in the Oligocene Epoch, two in the Miocene, and just one in the Pliocene.

在渐新世只发现了三种这种皮壳龟，在中新世发现了两种， 在上新世发现了一种。

And this newly productive environment, along with the absence of large predators, meant that whales were able to become twice as big as the biggest whales of the Pliocene.

这一新的生态环境，加上大型捕食者的缺失，意味着鲸鱼的体型能够变得是上新世最大鲸鱼的两倍。

As the climate continued to cool and dry throughout most of the Pliocene, weasels caught their stride in open grassland, steppe, and taiga habitats.

随着整个上新世大部分时间气候持续变冷和干燥，黄鼠狼在开阔的草原、草原和针叶林栖息地大步向前。

For example, the ultimate group of skinnymorphs - the weasels and martens - arose during a cool period of the Pliocene, around 5 million years ago.

例如，最终的瘦身动物群——黄鼠狼和貂——出现在大约 500 万年前的上新世凉爽时期。

Their fossils first appear in mainland Australia more than 3 million years ago in the Pliocene epoch, only reaching their current Indonesian island home in the Wallacea region around 1 million years ago.

它们的化石首次出现在 300 多万年前上新世的澳洲大陆，但他们只在约 100 万年前到达位于华莱士区的印尼岛屿上。

Then, as the Pliocene Epoch opened about 4 million years ago, one of the single-toed groups of equines finally gave rise to Equus, the genus of the modern horse.

然后，随着大约 400 万年前的上新世时代开始，单趾马科动物群中的一个终于进化出了现代马属马属。

The genus Thylacoleo alone was able to survive through the Pliocene into the Pleistocene epoch, where it eventually gave rise to Thylacoleo carnifex – the last and largest member of its family, which survived until around forty thousand years ago.

仅袋狼属就能够从上新世生存到更新世，最终产生了袋狼科——袋狼科中最后也是最大的成员，一直存活到大约四万年前。