Mesozoic Development Of Life
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The first flowering plant appeared during the Cretaceous time in the Mesozoic Era. It appeared about 245-66 million years ago.
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The first dinosaur appeared during the Triassic Time. The dinosaur was the Don Lessem.
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The first mammals appeared around the same time as the Dinosaurs. The first mammal was the Megazostrodon. (Mega-zo-stro-don). It appeared 225 million years ago.
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The first bird appeared during the Jurassic Time. It had large eyes, a long neck and long legs. This happened 208 million years ago.
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The first snake appeared during the Cretaceous Time. It was the python like this one. This occurred 144 million years ago.
The Mesozoic Era ended with a Mass extinction. The mass extinction wiped out many land and marine life. Including Dinosaurs.
The Era was most known for Pangaea breaking apart. The Mesozoic Era's nickname was the "age of reptiles."