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Oligocene    音标拼音: ['ɑləgos,in]
n. 渐新世,渐新统
a. 渐新世的,渐新统的

渐新世,渐新统渐新世的,渐新统的

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  • Oligocene - Wikipedia
    The best terrestrial record of Oligocene climate comes from North America, where temperatures dropped by 7 to 11 °C (13 to 20 °F) in the earliest Oligocene This change is seen from Alaska to the Gulf Coast
  • Oligocene Epoch | Climate, Flora Fauna | Britannica
    The term Oligocene is derived from Greek and means the “epoch of few recent forms,” referring to the sparseness of the number of modern animals that originated during that time
  • The Oligocene Epoch - University of California Museum of Paleontology
    The Oligocene Epoch, right smack in the middle of the Tertiary Period (and end of the Paleogene), lasted from about 33 9 to 23 million years ago * Although it lasted a "short" 11 million years, a number of major changes occurred during this time
  • Oligocene - New World Encyclopedia
    The Oligocene epoch is a division of the geologic time scale and the third and final epoch of the Paleogene period It extends from about 34 million to 23 million years before the present The Oligocene follows the Eocene epoch and is followed by the Miocene epoch
  • Overview of the Oligocene Epoch - ThoughtCo
    The Oligocene epoch marked the continuing transition between the wildlife of the Eocene and Miocene epochs Here's a look at prehistoric life during the Oligocene epoch
  • Oligocene - an overview | ScienceDirect Topics
    The Oligocene is defined as a geological epoch spanning from approximately 34 to 23 million years ago, characterized by two recognized stages: the Early Oligocene (Rupelian) and the Late Oligocene (Chattian)
  • OLIGOCENE Definition Meaning - Merriam-Webster
    The meaning of OLIGOCENE is of, relating to, or being an epoch of the Tertiary between the Eocene and Miocene or the corresponding series of rocks
  • Evolution: Change: Deep Time - PBS
    By history's standards, the Oligocene is relatively uneventful, both geologically and biologically Following the rapid cooling that ends the Eocene, the climate remains cooler and more seasonal
  • Oligocene Epoch | Encyclopedia. com
    Oligocene An epoch of the Tertiary Period, about 35 4–23 3 Ma ago, which follows the Eocene and precedes the Miocene Epochs Grasses evolved during the Oligocene (about 26 Ma ago), although large grass plains did not occur until about 5 Ma ago
  • Oligocene - Simple English Wikipedia, the free encyclopedia
    The Oligocene is the last geological epoch in the Palaeogene It lasted for about 11 million years, from 34 million years ago to 23 million years ago It was preceded by the Eocene and followed by the Miocene During the Oligocene, the world continued to get cooler from its peak in the mid-Eocene





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