Asian land mammal ages
Encyclopedia
The Asian Land Mammal Ages establishes a geologic timescale for prehistoric Asian fauna
Fauna
Fauna or faunæ is all of the animal life of any particular region or time. The corresponding term for plants is flora.Zoologists and paleontologists use fauna to refer to a typical collection of animals found in a specific time or place, e.g. the "Sonoran Desert fauna" or the "Burgess shale fauna"...

 beginning 58.7 Mya during the Paleogene
Paleogene
The Paleogene is a geologic period and system that began 65.5 ± 0.3 and ended 23.03 ± 0.05 million years ago and comprises the first part of the Cenozoic Era...

 and continuing through to the Middle Pleistocene
Middle Pleistocene
The Middle Pleistocene, more specifically referred to as the Ionian stage, is a period of geologic time from ca. 781 to 126 thousand years ago....

 (0.33 Ma). These periods are referred to as ages, stages, or intervals and were established using geographic place names where fossil materials where obtained.

The basic unit of measure is the first/last boundary statement. This shows that the first appearance event of one taxon is known to predate the last appearance event of another. If two taxa are found in the same fossil
Fossil
Fossils are the preserved remains or traces of animals , plants, and other organisms from the remote past...

 quarry
Quarry
A quarry is a type of open-pit mine from which rock or minerals are extracted. Quarries are generally used for extracting building materials, such as dimension stone, construction aggregate, riprap, sand, and gravel. They are often collocated with concrete and asphalt plants due to the requirement...

 or at the same stratigraphic horizon, then their age-range zones overlap.

Ages

  • Tabenbulakian
    Tabenbulakian
    The Tabenbulakian age is a period of geologic time within the Oligocene epoch of the Paleogene used more specifically with Asian Land Mammal Ages. It follows the Ulangochuian age....

    : Lower boundary 28.4 Ma. Upper boundary 23.03 Ma.
  • Hsandagolian
    Hsandagolian
    The Hsandagolian age is a period of geologic time within the Oligocene epoch of the Paleogene used more specifically with Asian Land Mammal Ages. It follows the Kekeamuan and precedes the Tabenbulakian age....

    : Lower boundary 33.9 Ma. Upper boundary 23.03 Ma.
  • Kekeamuan
    Kekeamuan
    The Kekeamuan age is a period of geologic time within the Early Oligocene epoch of the Paleogene used more specifically with Asian Land Mammal Ages. It follows the Houldjinian and precedes the Hsandagolian age....

    : Lower boundary 33.9 Ma. Upper boundary 28.4 Ma.
  • Houldjinian
    Houldjinian
    The Houldjinian age is a period of geologic time within the Late Eocene epoch of the Paleogene used more specifically with Asian Land Mammal Ages. It follows the Ergilian and precedes the Kekeamuan age....

    : Lower boundary 37.2 Ma. Upper boundary 33.9 Ma.37.
  • Ergilian
    Ergilian
    The Ergilian age is a period of geologic time within the Late Eocene epoch of the Paleogene used more specifically with Asian Land Mammal Ages. It follows the Ulangochuian and precedes the Houldjinian age....

    : Lower boundary 37.2 Ma. Upper boundary 33.9 Ma.37.
  • Ulangochuian
    Ulangochuian
    The Ulangochuian age is a period of geologic time within the Late Eocene epoch of the Paleogene used more specifically with Asian Land Mammal Ages. It follows the Sharamurunian and precedes the Ergilian age....

    : Lower boundary 37.2 Ma. Upper boundary 33.9 Ma.
  • Sharamurunian
    Sharamurunian
    The Sharamurunian age is a period of geologic time within the Middle Eocene epoch of the Paleogene used more specifically with Asian Land Mammal Ages...

    : Lower boundary 48.6 Ma. Upper boundary 37.2 Ma.
  • Irdinmanhan
    Irdinmanhan
    The Irdinmanhan age is a period of geologic time within the Middle Eocene epoch of the Paleogene used more specifically with Asian Land Mammal Ages. It follows the Arshantan and precedes the Sharamurunian age....

    : Lower boundary 48.6 Ma. Upper boundary 37.2 Ma.
  • Arshantan
    Arshantan
    The Arshantan age is a period of geologic time within the Early Eocene epoch of the Paleogene used more specifically with Asian Land Mammal Ages. It follows the Bumbanian age and precedes the Irdinmanhan age....

    : Lower boundary 48.6 Ma. Upper boundary 37.2 Ma.
  • Bumbanian
    Bumbanian
    The Bumbanian is an Asian Land Mammal Age , a large biozone which corresponds to ages between 55.8—46.8 Ma for finds of fossil mammals in Asia. This zone lies within the Ypresian stage of the Eocene series. It follows the Gashatan ALMA and precedes the Arshantan ALMA....

    : Lower boundary 55.8 Ma. Upper boundary 48.6 Ma.
  • Gashatan
    Gashatan
    The Gashatan is an Asian Land Mammal Age, a large biozone which corresponds to ages between 58.7—55.8 Ma for finds of fossil mammals in Asia. This zone lies within the Thanetian stage of the Paleocene series. It precedes the Bumbanian....

    : Lower boundary 58.7 Ma. Upper boundary 55.8 Ma.

Other continental ages

  • European Land Mammal Age
  • North American Land Mammal Age
  • South American Land Mammal Age
    South American Land Mammal Age
    The South American Mammal Ages establish a geologic timescale for prehistoric South American fauna beginning 64.5 Ma during the Paleogene and continuing through to the Middle Pleistocene...

The source of this article is wikipedia, the free encyclopedia.  The text of this article is licensed under the GFDL.
 
x
OK