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  1. Mesozoic

    Second era of the Phanerozoic Eon

    The Mesozoic Era is the era of Earth's geological history, lasting from about 252 to 66 million years ago, comprising the Triassic, Jurassic and Cretaceous Periods. It is characterized by the dominance of gymnosperms such as cycads, ginkgoaceae and araucarian conifers, and of archosaurian reptiles such as the dinosaurs; a hot greenhouse climate; and the tectonic break-up of Pangaea. The Mesozoic is the middle of the three eras since complex life evolved: the Paleozoic, the Mesozoic, and the Cenozoic. The era began in the wake of the Permian–Triassic extinction event, the largest mass extinction in Earth's history, and ended with the Cretaceous–Paleogene extinction event, another mass extinction whose victims included the non-avian dinosaurs, pterosaurs, mosasaurs, and plesiosaurs. The Mesozoic was a time of significant tectonic, climatic, and evolutionary activity. The supercontinent Pangaea began to break apart into separate landmasses. Wikipedia

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  3. britannica.com

    Jan 9, 2025Mesozoic Era, second of Earth's three major geologic eras of Phanerozoic time. Its name is derived from the Greek term for "middle life." The Mesozoic Era began 252.2 million years ago, following the conclusion of the Paleozoic Era, and ended 66 million years ago, at the dawn of the Cenozoic Era.(See the geologic time scale.)The major divisions of the Mesozoic Era are, from oldest to ...
  4. livescience.com

    Learn about the Mesozoic era, also known as the age of reptiles or the age of dinosaurs, when life diversified rapidly and giant reptiles roamed the Earth. Find out how the era started and ended, what life and climate were like, and what extinctions occurred during this period.
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  6. encyclopedia.com

    Learn about the Mesozoic Era, the second era in the Phanerozoic Eon, spanning 250 to 65 million years ago. Find out about the geologic events, extinctions, and life forms that characterized this period of Earth's history.
  7. fossilicious.com

    Learn about the Mesozoic Era, also known as the Age of Dinosaurs, when Earth experienced dramatic climate and tectonic changes, and mass extinction events. Explore the diverse life forms that evolved and dominated during this period, from mammals and birds to reptiles and marine creatures.
  8. britannica.com

    Mesozoic Era, Second of the Earth's three major geologic eras and the interval during which the continental landmasses as known today were separated from the supercontinents Laurasia and Gondwana by continental drift.It lasted from c. 251 to c. 65.5 million years ago and includes the Triassic, Jurassic, and Cretaceous periods. The Mesozoic saw the evolution of widely diversified and advanced ...
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