Aeronian

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Aeronian
440.8 ± 1.2 – 438.5 ± 1.1 Ma
↓
Chronology

In the

Ma and ended 438.5 ± 1.1 Ma (million years ago). The Aeronian Age succeeds the Rhuddanian Age and precedes the Telychian Age, all in the same epoch.[7]

During the Aeronian the Sedgwickii Event occurred in which graptolite diversity was greatly reduced.[8] This event has been attested in locations such as today's Canada, Libya as well as in La Chilca Formation in Argentina (then part of Gondwana).[8]

GSSP

The

graptolites to allow recognition of several biozones.[10]

References

  1. doi:10.1017/S0263593300000377
    .
  2. doi:10.1016/S0031-0182(03)00304-3
    .
  3. ^ "Chart/Time Scale". www.stratigraphy.org. International Commission on Stratigraphy.
  4. ^ a b "Silurian Telychian and Aeronian stage GSSPs have been relocated". stratigraphy.org. International Commission on Stratigraphy. Retrieved 1 March 2024.
  5. ^ Štorch, Petr. "Formal proposal for a new Global Boundary Stratotype Section and Point (GSSP) for the Aeronian Stage at Hlásná Třebaň, Czech Republic" (PDF). International Commission on Stratigraphy. Retrieved 16 April 2024.
  6. doi:10.13140/RG.2.2.13314.15044. Retrieved 1 March 2024. {{cite journal}}: Cite journal requires |journal= (help
    )
  7. ^ "GSSP Table - All Periods". International Commission on Stratigraphy. Retrieved 2018-09-15.
  8. ^
    doi:10.5027/andgeov50n2-3617
    .
  9. ISBN 9780521786737
    .
  10. ^ "GSSP for Aeronian Stage". International Commission on Stratigraphy. Retrieved September 15, 2018.


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