And I'm going to count that as a positive The last of the planocraniids, a species known as Boverisuchus vorax, went extinct between 40 million and 45 million years ago.

我将把它算作一个积极的结果 最后的扁颅动物，一种被称为 Boverisuchus vorax 的物种，在 4000 万到 4500 万年前灭绝了。