| 单词 |
permo-carboniferous |
| 释义 |
Permo-Carboniferous
Permo-Carboniferous[¦pər·mō‚kär·bə′nif·ə·rəs] (geology) The Permian and Carboniferous periods considered as one unit. The Permian and Pennsylvanian periods considered as a single unit. The rock unit, or the period of geologic time, transitional between the Upper Pennsylvanian and the Lower Permian periods. |
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