It is also thought to be about 55 million years old, emerging from the Eocene period of Earth’s history. And all in all, the Amazon serves as more than 50 percent of Earth’s surviving rainforest and contains roughly 390 billion trees.
These many billions of trees are split into about 16,000 different species. The sheer range of plant species in general found in the Amazon is actually more varied than in any other region around the world. As it stands, for example, more than 40,000 different species of plant have been recorded there.
Of course, the array of animal life in the Amazon is also profoundly broad. Some 2.5 million different kinds of insects have been recorded there, for instance. And this is on top of 2,200 species of fish, almost 1,300 kinds of bird and more than 400 types of mammal. New species continue to be discovered regularly too.