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  2. Oligocene - Wikipedia

    en.wikipedia.org/wiki/Oligocene

    The Oligocene is preceded by the Eocene Epoch and is followed by the Miocene Epoch. The Oligocene is the third and final epoch of the Paleogene Period. The Oligocene is often considered an important time of transition, a link between the archaic world of the tropical Eocene and the more modern ecosystems of the Miocene. [9]

  3. Geological history of Europe - Wikipedia

    en.wikipedia.org/wiki/Geological_history_of_Europe

    Until the lower Oligocene period, about 32 Mya, the future lands of Europe were an island continent, separated from Asia by a shallow sea, but possessing intermittent land-bridge connections to North America via Greenland. Many animal species from the much larger North America colonized Europe during these times.

  4. Chuska Sandstone - Wikipedia

    en.wikipedia.org/wiki/Chuska_Sandstone

    The Oligocene Chuska Sandstone is a geologic formation that crops out in the Chuska Mountains of northeastern Arizona and northwestern New Mexico.The formation is a remnant of a great sand sea, or erg, that once covered an area of 140,000 square kilometres (54,000 sq mi) reaching from the present locations of the Chuska Mountains to near Albuquerque and to the southwest.

  5. Geological history of Earth - Wikipedia

    en.wikipedia.org/wiki/Geological_history_of_Earth

    A brief marine incursion marks the early Oligocene in Europe. There appears to have been a land bridge in the early Oligocene between North America and Europe since the faunas of the two regions are very similar. During the Oligocene, South America was finally detached from Antarctica and drifted north toward North America.

  6. Chitarwata Formation - Wikipedia

    en.wikipedia.org/wiki/Chitarwata_Formation

    The Chitarwata Formation is a geological formation in western Pakistan, made up of Oligocene and early Miocene terrestrial fluvial facies.The sediments were deposited in coastal depositional environments (estuarine, strandplain and tidal flats) when Pakistan was partly covered by the Tethys Ocean.

  7. Natural history of New Zealand - Wikipedia

    en.wikipedia.org/wiki/Natural_history_of_New_Zealand

    The natural history of New Zealand began when the landmass Zealandia – today an almost entirely submerged mass of continental crust with New Zealand and a few other islands peaking above sea level – broke away from the supercontinent Gondwana in the Cretaceous period. Before this time, Zealandia shared its past with Australia and Antarctica.

  8. Eocene–Oligocene extinction event - Wikipedia

    en.wikipedia.org/wiki/Eocene–Oligocene...

    The Eocene–Oligocene extinction event, also called the Eocene-Oligocene transition (EOT) or Grande Coupure (French for "great cut"), is the transition between the end of the Eocene and the beginning of the Oligocene, an extinction event and faunal turnover occurring between 33.9 and 33.4 million years ago. [1]

  9. Paraborhyaena - Wikipedia

    en.wikipedia.org/wiki/Paraborhyaena

    Paraborhyaena was one of the largest predatory metatherians of all times. It was the size of an American black bear, with a head-torso length of almost 1.5 meters and an estimated weight between 100 and 125 kilograms.