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Encyclopedia > Olenekian
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The Olenekian (also known as the Yongningzhenian) is a stage of the Early Triassic epoch. It spans the time between 249.7 ± 0.7 Ma and 245 ± 0.7 Ma (million years ago). Faunal stages are a subdivision of geologic time used primarily by paleontologists who study fossils rather than by geologists who study rock formations. ... Jump to: navigation, search The Early Triassic (also known as Lower Triassic, Buntsandstein, or Scythian) is the first of three epochs of the Triassic period. ... The word epoch can mean either an interval of time, or a particular point in time used as a reference point. ... Mega-annum, usually abbreviated as Ma, is a unit of time equal to one million years. ...


References

  • GeoWhen Database - Olenekian
Triassic period
Lower/Early Triassic Middle Triassic Upper/Late Triassic
Induan Olenekian Anisian Ladinian Carnian Norian
Rhaetian

  Results from FactBites:
 
Palaeos Mesozoic : Triassic : Olenekian (950 words)
The Olenekian Age is named for the Олениок River in Siberia, where the type section occurs, and which we have probably spelled incorrectly.
The beginning of the Olenekian (Induan - Olenekian boundary) is marked by the first appearance of the conodont Neospathodus waageni.
Another indicator is a magnetostratigraphic shift from reversing polarity in the Late Olenekian to a long normal zone in the Early Anisian.
  More results at FactBites »


 

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