He sold three different Dimetrodon bones to the same buyer.

他把三块长棘龙的骸骨卖给了同一个人。

And we'll start with one of the most commonly mistaken dinosaurs, Dimetrodon.

我们将从最常被误认为的恐龙之一——异齿龙开始。

And here, too, mammals ended up taking a page from the book of Dimetrodon.

在这里，哺乳动物最终也效仿了异齿龙。

Dimetrodon looks prehistoric with it's spraying gait, toothy grin, and unusual sail.

异齿龙的步态、露齿的笑容和不寻常的帆看起来像是史前的。

What is the feature that makes an animal like dimetrodon more similar to mammals than to dinosaurs?

是什么特征使像异齿龙这样的动物更像哺乳动物而不是恐龙？

Dimetrodon didn't give birth to live young and neither do mammals like the platypus.

异齿龙不会生下后代，鸭嘴兽等哺乳动物也不会。

As the Permian progressed, amniote predators like Dimetrodon, Ophiacodon, and eventually saber-toothed gorgonopsians became widespread.

随着二叠纪的进展，羊膜动物捕食者如异齿龙、蛇夫和最终的剑齿蛇目动物变得普遍。

Whether the sail of Dimetrodon was used as a mating display or for threatening rivals is anyone's guess.

Dimetrodon 的帆是用作交配展示还是用于威胁对手是任何人的猜测。

Alas, the reign of Dimetrodon ended around 270 million years ago.

唉，异齿龙的统治大约在 2.7 亿年前结束了。

Remind me to do an episode about placentas Ok I'll remind you OK, now let's get back to Dimetrodon.

提醒我做一个关于胎盘的插曲好吧我会提醒你好吧，现在让我们回到 Dimetrodon。

Actually, Platyhystrix looked like a miniature version of another creature that shared its habitat: the stem-mammal known as Dimetrodon.

实际上，扁嘴龙看起来像是另一种共享其栖息地的生物的微型版本：被称为 Dimetrodon 的有干哺乳动物。

But there are some relatives of Dimetrodon -- like Sphenacodon here -- that were plenty big, but had tiny sails.

但是有一些异齿龙的近亲——比如这里的蝶齿兽——体型很大，但帆很小。

Dimetrodon dominated the last period of the Palaeozoic, the Permian Period, alongside many other animals that can seem at once familiar and … not.

异齿龙主宰了古生代的最后一个时期， 即二叠纪时期，与许多其他看起来既熟悉又… … 不熟悉的动物一起。

Dimetrodon's name actually means " two-measure tooth, " because, before it and its kin came along, most animals had rows of teeth that were basically identical.

Dimetrodon 的名字实际上意为“双齿”， 因为在它和它的近亲出现之前，大多数动物的牙齿排基本相同。

And many of them, like Dimetrodon, had large sails that suggest synapsids might also have been better adapted at regulating their body temperatures.

它们中的许多，比如异齿龙，都有很大的帆，这表明合弓类动物可能也更适合调节体温。