Prehistoric animals, like dinosaurs, are often regarded with more awe as they no longer exist, therefore an aura of mysticism revolves around them. However, thanks to a nifty process in nature called convergent evolution, we may have a better idea, than some would think, on what certain prehistoric beasts really looked like, and sometimes convergent evolution can be so extreme, that it more or less provides us with a window into the past, as seen with these 5 examples!