Homerian

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Not to be confused with Homeric.
Homerian
430.5 ± 0.7 – 427.4 ± 0.5 Ma
↓
graptolite Cyrtograptus lundgreni
Lower boundary GSSPSheinton Brook, Homer, England
52°36′56″N 2°33′53″W / 52.6156°N 2.5647°W / 52.6156; -2.5647
Lower GSSP ratified1980[4]
Upper boundary definitionFAD of the graptolite Saetograptus (Colonograptus) varians
Upper boundary GSSPPitch Coppice, Ludlow, U.K.
52°21′33″N 2°46′38″W / 52.3592°N 2.7772°W / 52.3592; -2.7772
Upper GSSP ratified1980[4]

In the geologic timescale, the Homerian is an age of the Wenlock Epoch of the Silurian Period of the Paleozoic Era of the Phanerozoic Eon that is comprehended between 430.5 ± 0.7 Ma and 427.4 ± 0.5 Ma (million years ago), approximately. The Homerian Age succeeds the Sheinwoodian Age and precedes the Gorstian Age.

The name comes from the small village of Homer, Shropshire near Much Wenlock.[5] The defining lower boundary of Homerian rock layers (GSSP) is located within the Coalbrookdale Formation of England.

References

  1. doi:10.1017/S0263593300000377
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  2. doi:10.1016/S0031-0182(03)00304-3
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  3. ^ "Chart/Time Scale". www.stratigraphy.org. International Commission on Stratigraphy.
  4. ^ a b c Holland, C. (1982). "The State of Silurian Stratigraphy" (PDF). Episodes. 1982: 21–23. Retrieved 11 December 2020.
  5. ISBN 9780521786737
    .


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