At the time that Tiktaalik lived, what is now the Canadian Arctic region was part of a landmass that straddled the equator.It had a subtropical climate, much like the Amazon basin today.

• 意义媲美发现始祖鸟如果人们认为进化过程是一个不断获得适应新环境所需要的器官的过程，那麽这个化石的出现正好证明了这种过程的存在。