Langhian

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Langhian
15.97 – 13.82 Ma
↓
Chronology

The Langhian is, in the

Ma and 13.65 ± 0.05 Ma (million years ago) during the Middle Miocene.[5]

The Langhian was a continuing warming period[6] defined by Lorenzo Pareto in 1865, it was originally established in the Langhe area north of Ceva in northern Italy, hence the name. The Langhian is preceded by the Burdigalian and followed by the Serravallian Stage.

Stratigraphic definition

The base of the Langhian is defined by the first appearance of

GSSP
for the Langhian Stage was not yet established in 2009.

The top of the Langhian Stage (the base of the Serravallian Stage) is at the first occurrence of fossils of the nanoplankton species Sphenolithus heteromorphus and is located in magnetic chronozone C5ABr.

The Langhian is coeval with the

North American Land Mammal Ages,[5] with mid-Relizian to Luisian Californian regional stages (the Luisian extends barely into the early Serravallian[5]), with the early-mid Badenian Paratethys stage of Central and eastern Europe,[7] with the Tozawan stage in Japan (which runs barely into the early Serravallian[5]), with the late Batesfordian through Balcombian to early Bairnsdalian Australian stages[5] and with the mid-Cliffdenian to mid-Lillburnian New Zealand stages.[5]

Paleontology

Reptiles

  • Meiolania brevicollis

Cartilaginous fish

Sharks, rays, skates and relatives

Grizzled Giant Squirrel, Ratufa macroura. Its genus
was probably already distinct in the Langhian.

Mammals

Climate

In August 2021, the 6th IPCC report indicated that global temperature was 4°C– 10°C warmer during the Miocene Climatic Optimum (16.9-14.7 Ma ago) than 1850-1900.[8]

See also

References

Footnotes

  1. doi:10.1016/0012-821X(96)00109-4
    .
  2. JSTOR 3515337
    . Retrieved 2008-02-11.
  3. ^ "ICS Timescale Chart" (PDF). www.stratigraphy.org.
  4. doi:10.18814/epiiugs/2009/v32i3/002
    . Retrieved 26 December 2020.
  5. ^ a b c d e f GeoWhen (2007)
  6. ISBN 0-8493-1632-4
  7. ^ a b Palaeos (2003)
  8. ^ "AR6 Climate Change 2021: The Physical Science Basis — IPCC".

Literature

Wikisource has original works on the topic: Cenozoic#Neogene
  • Gradstein, F.M.; Ogg, J.G. & Smith, A.G.; 2004: A Geologic Time Scale 2004,
    Cambridge University
    Press.
  • Pareto, L.; 1865: Note sur les subdivisions que l'on pourrait établir dans les terrains tertaires de l'Apennin septentrional, Bulletin de la Société Géologique de France 2(22), p. 210-277. PDF Archived 2021-01-15 at the Wayback Machine (in French)

External links

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