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Global paleogeographic restoration of the earth in the lateTriassic duration 220 million years ago.(Courtesy Dr. Ron Blakey)
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Global paleogeographic repair of the earth in the lateJurassic period 150 million year ago.(Courtesy Dr. Ron Blakey)
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Global paleogeographic reconstruction of the earth in the late Cretaceous period 90 million year ago. (Courtesy Dr. Ron Blakey)
The Mesozoic Era is the age of the dinosaurs and lasted nearly 180 million yearsfrom approximately 250 to 65 million year ago. This era contains 3 well knownperiods dubbed the Triassic,Jurassic, andCretaceous periods. A mass-extinction significant thebeginning and also end of the Mesozoic Era. The occasion that resulted in the shift fromthe Paleozoic era come the Mesozoic era was the greatest extinction this earth hasseen. This extinction delete everything out around 95% of all marine life and 70% the land-life.This allowed the dinosaurs to action in and settle into their role as the lords ofthe earth. The era finished with "The great Extinction" which significant the finish of thedinosaurs as the Cenozoic era began.

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Tectonics

At the beginning of the Mesozoic era the continents as we know them to be joined together as the substantial mother continent, Pangaea. The was throughout the period of the dinosaurs that Pangaea was revolutionized to the modern continents. Pangaea became two good continents recognized as Laurasia and also Gondwana and also the Atlantic Ocean began to grow. Laurasia eventually separation into the continent of north America and Eurasia. Gondwana ended up being the modern continents of south America, Africa, Australia, Antarctica, and also the India subcontinent, which, after the Mesozoic era, collided with Eurasia creating the Himalayas.

Environment

The environment was person who is abnormal warm and also polar ice cream caps did no yet exist. This played a big part in evolution and is a crucial factor behind the flourishing of the dinosaurs. Throughout the Triassic period the climate was generally dry, which adjusted near the Jurassic duration as oceans began to rise due to mounting layers of magma covering the seafloor. As a result, flooding overtook numerous parts the the exposed land.

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This permitted the climate to adjust with increased humidity and also it ongoing that means even right into the Cretaceous period. However, the climate began to cool during the Cretaceous although temperature may have risen again close to the end of the Mesozoic.Proterozoiceon542 Ma - Phanerozoic eon - Present542 Ma - Paleozoic era - 251 Ma251 Ma - Mesozoic era - 65 Ma65 Ma - Cenozoic era - PresentCambrianOrdovicianSilurianDevonianCarboniferousPermianTriassicJurassicCretaceousPaleogeneNeogeneQuaternary