Carboniferous: of, belonging to, or denoting a geologic division of the Paleozoic Era following the Devonian and preceding the Permian.

石炭纪的，石炭系的：(属于或表示)地质上的一个分段，即紧跟着泥盆纪而早于二叠纪的古生代的。

youdao

Of, belonging to, or being the geologic time, system of rocks, and sedimentary deposits of the sixth period of the Paleozoic Era, characterized by the development of coal-bearing rock formations.

盆地周围为前震旦纪变质岩系及古生代灰岩、页岩组成的高丘、低山。

youdao

This was the end of the Permian period, and of the era of life called the Paleozoic.

这就是二叠纪以及整个古生代的终结。

youdao