How to Use "Carboniferous" with Example Sentences

1. The carboniferous brachiopod assemblages zone of yanbian , sichuan .

2. However robert berner of yale university thinks oxygen levels plummeted after the carboniferous before slowly rising to present day levels ( see graph ) .

3. The lush swamp forestsof the carboniferous were gradually replacedbyconifers , seed ferns , and other drought - resistant plants .

4. The tianshan carboniferous early permian rift related volcanism in northwestern china represents a newly recognized large igneous province .

5. During the late carboniferous , sedimentary rocks-rocks eroded by wind and water and deposited as fine sediments-carpeted much of the region , which might have been partially flooded from time to time . Subsequent lava flows deposited volcanic rocks up to 20 meters ( 65 feet ) thick in some places .