If dinsours were still alive would we be here, or would
we die off?
Mammals would not have evolved at a fast rate if it were not for the
extinction of the reptilian age. The mammals filled a void in the habitats
that were available and evolved from there. If the dinosaurs were still
here, it is not possible to tell how or what would have evolved. Man's
existence would be in question.
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Update: June 2012