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[–]Vigte[S] 1 insightful - 1 fun1 insightful - 0 fun2 insightful - 1 fun -  (0 children)

Wow! Sorry it took so long to reply but this post is just filled to the brim with great stuff!

So the drop in atmospheric pressure may relate to lower O2 and thus smaller animals perhaps? We know about the big winged Dragonflys and super animals from high oxygen environments - perhaps these catastrophes are the cause of rapid die off of larger animals...