MadSci Network: General Biology

Re: How long have tropical rainforests existed for?

Date: Sun Aug 29 18:43:19 2004
Posted By: Marcus Knight, Staff, Planetcare Science, Private Conservation Permaculture Consulting
Area of science: General Biology
ID: 1093444165.Gb

Tropical rainforest have been around for 400 million years only in the 
beginning they consisted of mainly Gymnosperms, ferns, clubmoss and 
horsetails. These were semidecidious  plants that grew to 150ft and are
responsible for the coal deposits we mine today. Angiosperms - Flowering plants-
evolved around 150 million years ago which dominate most of the forest in the 
tropics today. Records show Civilization was alive in the South 
American rainforest 40,000 years or more ago.
Reference Time Life Books, Nature Library , The Forest .

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