The development of the dinosaur at early dinosaur's age.

    As we know that, Dinosaur ruled the whole Jurassic and Cretaceous period, both of the herbivore and the Carnivorous dinosaurs. At the beginning of the Jurassic period, the dinosaurs who avoid from the Triassic - Jurassic Extinction developed fast and ruled the rest of the Jurassic time. We(www.justdinosaur.com) can do all these kinds of dinosaurs in animatronic dinosaurs, make it vivid, alive in our life. The simulated life size realistic dinosaurs can bring us to the world like Jurassic world 145 - 200 million years before.

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    Before the Jurassic period, is the Triassic period. At the late of the Triassic (Around 210Ma), the dinosaurs also ruled the herbivore, and the carnivorous is Pseudosuchia which were look like the crocodile or lizard. Nowadays the Crocodile just live with the river but not that time. So, the development of the dinosaurs happened before this time, let’s focus on this time.

    Around 240Ma, at the Ladinian age, the first dinosaur maybe appeared at this age. The ruler during the Ladinian age on the land was Synapsid (ancestor of the human being). The Synapsid ruled the mainland at the beginning of the Permian period to about 233 Ma in Carnian age, then the world changed in a heavy rainfall called CPE (Carnian Pluvial Event). The CPE made the Triassic period before it was similar to Permian period, and after that was similar to Jurassic period.

    So, what happened during the CPE? How the heavy rainfall makes the earth totally different as before?

    Nowadays, we know that the mainland is separated into many pieces. But at Triassic even the Permian period, the mainland combined as one mainland: Pangea. It began to divide at the late Triassic period and the early Jurassic period. The huge mainland made the inside of the mainland really dry before the CPE. The dinosaurs just can live in the corner of South America. One day, the Wrangellia happened a volcanic eruption, the CO2 went into the air make it drier than before. Just when the animals could not bear the dry air and high temperature, the raising of the temperature made the atmospheric circulation changing. The heavy rainfall has come into the depth of the Pangea. The rainy season lasted about 2 million years. After the rain, the Sauropsida began to rule the rest of the Mesozoic which were late Triassic (Pseudosuchia), the whole Jurassic and the Cretaceous Period(dinosaur).