The term megafauna (Ancient Greek megas "large" + New Latin fauna "animal") has two distinct meanings in the biological sciences. The less commonly found meaning's of any animal which can be seen with the unaided eye, in contrast to microfauna. The more commonly found meaning, discussed in this article,'s of "giant", "very large" or "large" animals — although there's no standard definition of a minimum size. In practice the most common usage encountered in academic and popular writing desc… (More on Megafauna)