Travel Reference
In-Depth Information
Figure 74 A wide variety of tree species are refl ected in the seasonally fl ooded Marañòn
River of the upper Amazon.
energy building up provisions for unfertilized eggs, as sometimes happens
with other seed-bearing plants such as the seed ferns.
Although fl owering plants fi rst appeared at the beginning of the Age of
Dinosaurs, 140 million years ago, they did not dominate tropical forests com-
pletely until near the end of the dinosaurs' reign. And tropical rainforests
that resemble those of today seem to have appeared only after the beginning
of the Age of Mammals, 65 million years ago.
 
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