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 385 million years ago

Mean atmospheric O2
 75% of modern level

Mean atmospheric CO2
 8x pre-industrial level

Mean temperature
 6C above modern level


Paleozoic Earth - An ancient forest of Archaeopteris backlit by a Late Devonian sun 385 million years ago in what is today Europe - Natural History Illustration Geologic Time Scale

 Era: Paleozoic
  Period: Devonian
   Epoch: Late
    Age: Frasnian


Archaeopteris contre-jour

A Late Devonian sun sets behind a forest of tall tree-like plants of the genus Archaeopteris 385 million years ago in what is today Europe. Lounging in the shallow foreground water is an extinct lungfish of the genus Dipterus. Forests of Archaeopteris likely witnessed 24 billion sunsets.



Copyright Walter B. Myers. All rights reserved.

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