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Which roughly equals 50 per day. Now compared to the 1200~ species extinct each day it seems far too few, but keep in mind that the number of species we find might be lower than the number of species created each day.
In much of the eastern United States, they are also known for their appearance in colossal numbers (as many as 1.5 million per acre) every 13 or 17 years. Although these periodical cicadas (Magicicada spp.) do not occur in Florida, they merit further discussion under Life Cycles.