Tree’s and vegetation remind me of the Pliocene, and you need some wild animals. www.google/search?q=pliocene&newwindow=1&espv=2&biw=1280&bih=702&site=webhp&source=lnms&tbm=isch&sa=X&ei=C2QWVfDVD4PtatSXgKAL&ved=0CAYQ_AUoAQ&dpr=1#newwindow=1&tbm=isch&q=pliocene+plants&revid=108162441