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, 21:37, April 19, 2007
Which evolutionary scientists frequently claim that mammals occurred in the Jurassic?
A current theory <ref> see for example http://www.abc.net.au/science/news/stories/s240655.htm </ref> would have put their origins around 120 million years ago, which if I am not mistaken is in the Cretaceous?--[[User:Felix|Felix]] 17:37, 19 April 2007 (EDT)