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  • As you know, the Mesozoic era means "Middle era", the age of reptiles and dinosaurs who have been roaming the Earth.
  • It began 252 million years ago in the aftermath of the mass extinction called The Great Dying.
  •  Right! And as far as I know, there are 3 periods within that era. The Triassic, Jurassic and Cretaceous.
  • Exactly! then let's start with the Triassic Period which began 251-201 million years ago,
  • wherein Cone-bearing plants (gymnosperms) and dinosaurs such as Archosaurs, Ichthyosaurs, and Saurischians became more diverse.
  • Sadly, not until the very end of this period, did the so-called supercontinent "Pangea" break apart causing volcanic activity, ensuing the rise in global temperature.
  • But not for Jurassic Period which transpires 201-145 million years ago. The time when dinosaurs have already acquired adaptations. 
  • Indeed, the dinosaurs appear and began to prosper, however, the break up of Pangea was still underway and complex series of extinctions occurred. 
  • How sad, the fact that this period will always be a golden age for those reptiles and dinosaurs.
  • Just as Anchiornis started to take off and Ornithischians diversified.
  • 
  • Right.. and this occurrence steers to the Cretaceous period around 145-66 million years ago. 
  • Yes, and during this period the first birds appear and began to scatter throughout the world.Also, flowering plants (archaefructus) initiate, but unfortunately, the dominance of dinosaurs and reptiles comes to an end.
  • According to what I've heard, it was the Mesozoic era's longest time.
  •  As by the late Cretaceous, massive volcanic eruptions occurred amid these eruptions, a giant asteroid struck in the Gulf of Mexico, threatened all life on Earth.
  • And as expected, it leads the giant reptiles wiped out and brought about the disappearance of 75% of the world species.
  •  What a miserable life for those giant reptiles and dinosaurs of the Mesozoic, their dominance turns out to be their downfall.
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