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  2. Mesozoic - Wikipedia

    en.wikipedia.org/wiki/Mesozoic

    The Mesozoic Era [3] is the era of Earth's geological history, lasting from about , 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.

  3. Geological history of Earth - Wikipedia

    en.wikipedia.org/wiki/Geological_history_of_Earth

    The Precambrian includes approximately 90% of geologic time. It extends from 4.6 billion years ago to the beginning of the Cambrian Period (about 539 Ma).It includes the first three of the four eons of Earth's prehistory (the Hadean, Archean and Proterozoic) and precedes the Phanerozoic eon.

  4. Triassic - Wikipedia

    en.wikipedia.org/wiki/Triassic

    The Triassic is the first and shortest period of the Mesozoic Era and the seventh period of the Phanerozoic Eon. Both the start and end of the period are marked by major extinction events. [10] The Triassic Period is subdivided into three epochs: Early Triassic, Middle Triassic and Late Triassic.

  5. A Study Says the Mesozoic Era Is the Key to Finding the ... - AOL

    www.aol.com/lifestyle/study-says-mesozoic-era...

    Of all the phases Earth has been through, the Mesozoic Era stands out among the rest—even from off-world. A Study Says the Mesozoic Era Is the Key to Finding the Elusive Second Earth in Space ...

  6. Timeline of Cretaceous–Paleogene extinction event research

    en.wikipedia.org/wiki/Timeline_of_Cretaceous...

    Since the 19th century, a significant amount of research has been conducted on the Cretaceous–Paleogene extinction event, the mass extinction that ended the dinosaur-dominated Mesozoic Era and set the stage for the Age of Mammals, or Cenozoic Era. A chronology of this research is presented here.

  7. Ouarkziz crater - Wikipedia

    en.wikipedia.org/wiki/Ouarkziz_crater

    The crater was formed by a meteor impact less than 70 million years ago, during the late Cretaceous Period of the Mesozoic Era. Originally called Tindouf, the 3.5-kilometer wide crater has been heavily eroded since its formation; however, its circular morphology is highlighted by exposures of older sedimentary rock layers that form roughly ...

  8. Timeline of fish evolution - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_fish_evolution

    The Mesozoic Era began about 252 million years ago in the wake of the Permian-Triassic event, the largest mass extinction in Earth's history, and ended about 66 million years ago with the Cretaceous–Paleogene extinction event, another mass extinction that killed off non-avian dinosaurs, as well as other

  9. Middle Triassic - Wikipedia

    en.wikipedia.org/wiki/Middle_Triassic

    Following the Permian–Triassic extinction event, the most devastating of all mass-extinctions, life recovered slowly.In the Middle Triassic, many groups of organisms reached higher diversity again, such as the marine reptiles (e.g. ichthyosaurs, sauropterygians, thallatosaurs), ray-finned fish and many invertebrate groups like molluscs (ammonoids, bivalves, gastropods).