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    Inhaltsangabe

    Scientists have long attempted to understand Earth’s past, and in service to that effort, they have divided the world’s history into eons, eras, periods, epochs, and ages. For example, the current eon is called the Phanerozoic, which means “visible life”. This is the eon in which multi-cellular life has evolved and thrived. Before this, life was microscopic (single cell).

    The Phanerozoic eon is divided into 3 eras - Paleozoic (“old life”), Mesozoic (“middle life”) and Cenozoic (“new life”). From there, the Mesozoic era is divided into 3 periods - Triassic, Jurassic and Cretaceous.

    Before the Triassic, primitive life had built up in the oceans and seas, and some lifeforms finally had crawled onto land during the Paleozoic era. With that, life had become well established, but then came the Permian-Triassic mass extinction, the worst extinction event in the history of the planet. At the end of the Triassic, another extinction event cleared the way for dinosaurs to become the dominant set of species in the Jurassic.

    Though the Triassic does not have as interesting a list of creatures as those in the Jurassic and Cretaceous, such as Tyranosaurus rex, Stegosaurus, Pterodactyls, Brontosaurus, and the like, the life which reclaimed the Earth and then thrived during this period was no less important. Life during the Triassic spent nearly 60 percent of its time recovering from the Permian-Triassic extinction event, roughly 30 million years. What had been built up was then slammed by nature, effectively clearing the board once more for new species to take over.

    The Triassic Period: The History and Legacy of the Geologic Era that Witnessed the Rise of Dinosaurs looks at the development of the era, the extinction events that preceded it, and how dinosaurs began to evolve in the Late Triassic. You will learn about the Triassic Period like never before.

    ©2019 Charles River Editors (P)2019 Charles River Editors

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