Age is also called secondary age (second period) lasted about 140 million years. Climate is getting better. However, the temperature is still in flux. Sometimes the air temperature is very high, but sometimes very low, rainfall began to decrease. Large rivers and lakes many dry and muddy. Large trees and animals that live on land began to emerge. Some species grow very big amfhibi some even exceeding a crocodile. Likewise, reptiles reach a very large dinosaur, 12 meters, tyranosaurus, 30 yards, and ten times the size of a brontosaurus that elephant.
There are also reptile memilikisayap and capable of flying for hours in the air to find prey. One of these is the Pteranodon species of reptiles. Because at this age to develop various types of reptiles, then the era is also called the age of reptiles. At the end of the Mesozoic era, similar animals mammals already exist.
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