And they started with the first decapod crustaceans, like Palaeopalaemon.

他们从最早的十足目甲壳类动物开始，比如古古龙。

And Palaeopalaemon is the oldest lobster-like decapod ever found, and also one of the oldest decapods, period.

Palaeopalaemon 是迄今为止发现的最古老的类龙虾十足类动物，也是最古老的十足类动物之一。

Decapods are named for their ten feet, and their order includes things like shrimp, crayfish, lobsters, and crabs -- both true and false.

十足类以其十英尺长而得名，它们的顺序包括虾、小龙虾、龙虾和螃蟹之类的东西——有真有假。

Now, on the other side of the decapod family tree, there's Platykotta, just a little older than Eoprosopon at about 200 million years old, from the late Triassic Period.

现在，在十足类动物系谱树的另一边，有 Platykotta， 它比 Eoprosopon 稍老一点， 大约有 2 亿年的历史，来自三叠纪晚期。

But then, around 260 million years ago, decapods split into two groups -- the Anomurans, or those false, fake wanna-be crabs, and the Brachyurans, or the true crabs -- the crabs that aren't lying to you.

但是，大约在 2.6 亿年前，十足类动物分成了两个类群——无尾类动物，或者那些假的、假想成为螃蟹的人，以及短尾类动物， 或者真正的螃蟹——那些没有骗你的螃蟹。