In case you've forgotten middle-school biology: yes, dolphins are whales; they, along with porpoises and a variety of bigger animals that we call whales, all belong to the Cetacean infraorder.

如果你忘记了中学生物学：是的，海豚是鲸鱼；是的，海豚是鲸鱼；是的，海豚是鲸鱼。它们与鼠海豚和各种我们称之为鲸鱼的大型动物都属于鲸类下目。

But it wasn't a crab—at least, not a " true crab." Paralomis and its modern counterparts belong to an infraorder known as Anomura, a huge group of crustaceans that includes everything from the porcelain crab to the coconut crab.

但它不是螃蟹——至少不是“真正的螃蟹” 。 Paralomis 及其现代对应物属于一个被称为 Anomura 的亚目，这是一个巨大的甲壳类动物群， 包括从瓷蟹到椰子蟹的所有物种。