|Global paleogeographic restoration of the earth in the lateTriassic duration 220 million years ago.(Courtesy Dr. Ron Blakey)|
|Global paleogeographic repair of the earth in the lateJurassic period 150 million year ago.(Courtesy Dr. Ron Blakey)|
|Global paleogeographic reconstruction of the earth in the late Cretaceous period 90 million year ago. (Courtesy Dr. Ron Blakey)|
You are watching: What event marked the end of the mesozoic era
TectonicsAt 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.
EnvironmentThe 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.