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Late Triassic

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  • Late Triassic — The Late Triassic (also known as Upper Triassic, or Keuper) is the third and final of three epochs of the Triassic period. It spans the time between 228 ± 2 Ma and 199.6 ± 0.6 Ma (million years ago). The Late Triassic is divided into the Carnian …   Wikipedia

  • Triassic Period — Interval of geologic time, с 248–206 million years ago, that marks the beginning of the Mesozoic Era. Many new vertebrates emerged during the Triassic, heralding the major changes that were to occur in both terrestrial and marine life forms… …   Universalium

  • Triassic — Geological period from=251 middle=225 to=199 o2=16 co2=1750 temp=17The Triassic is a geologic period and system that extends from about 251 to 199 Ma (million years ago). As the first period of the Mesozoic Era, the Triassic follows the Permian… …   Wikipedia

  • Triassic–Jurassic extinction event — The Triassic–Jurassic extinction event marks the boundary between the Triassic and Jurassic periods, Ma|Jurassic, and is one of the major extinction events of the Phanerozoic eon, profoundly affecting life on land and in the oceans. Twenty… …   Wikipedia

  • Late Devonian extinction — …   Wikipedia

  • Triassic — /traɪˈæsɪk/ (say truy asik) adjective 1. relating to the geological period or system that constitutes the earliest principal division of the Mesozoic era. –noun Also, Triassic era. 2. the period or system characterised by widespread land deposits …   Australian English dictionary

  • Triassic — [trʌɪ asɪk] adjective Geology relating to or denoting the earliest period of the Mesozoic era (between the Permian and Jurassic periods, about 245 to 208 million years ago), a time when the first dinosaurs, ammonites, and primitive mammals… …   English new terms dictionary

  • Permian–Triassic extinction event — …   Wikipedia

  • Middle Triassic — System Series Stage Age (Ma) Jurassic Lower Hettangian younger Triassic Upper …   Wikipedia

  • dinosaur — /duy neuh sawr /, n. 1. any chiefly terrestrial, herbivorous or carnivorous reptile of the extinct orders Saurischia and Ornithischia, from the Mesozoic Era, certain species of which are the largest known land animals. 2. something that is… …   Universalium

  • Evolution of mammals — Restoration of Thrinaxodon, a member of the cynodont group, which includes the ancestors of mammals Further information: Evolutionary history of life The evolution of mammals within the synapsid lineage (sometimes called mammal like reptiles )… …   Wikipedia