Context: A global drop in sea level at the end of the Devonian reversed early in the Carboniferous; this created the widespread epicontinental seas and carbonate deposition of the Mississippian. There was also a drop in south polar temperatures; southern Gondwana was glaciated throughout the period, though it is uncertain if the ice sheets were a holdover from the Devonian or not. These conditions apparently had little effect in the deep tropics, where lush coal swamps flourished within 30 degrees of the northernmost glaciers. A mid-Carboniferous drop in sea-level precipitated a major marine extinction, one that hit crinoids and ammonites especially hard. This sea-level drop and the associated unconformity in North America separate the Mississippian Period from the Pennsylvanian period.

Question: What occurred to the level of the sea when the Devonian period was finished?
Answer: A global drop

Question: During which period were epicontinental seas created?
Answer: Carboniferous

Question: What was on the land at 30 degrees latitude north in the carboniferous period?
Answer: lush coal swamps

Question: What was the result in the decline in sea level in the middle of the Carboniferous period?
Answer: a major marine extinction

Question: The Pennsylvania period is separated by the drop in Carboniferous era sea levels from what other period?
Answer: Mississippian Period

Question: What dropped world wide at the begining of the Devonian?
Answer: Unanswerable

Question: How widespread was the drop in sea llevel in the Carboniferous?
Answer: Unanswerable

Question: What temperatures dropped during the Devonian?
Answer: Unanswerable

Question: What region was deeply impacted by the conditions of the Carboniferous?
Answer: Unanswerable

Question: What could be found just north of the glacerers 
Answer: Unanswerable