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 443 million years ago

Mean atmospheric O2
 70% of modern level

Mean atmospheric CO2
 16x pre-industrial level

Mean temperature
 3C above modern level


Paleozoic Earth - Silurian Earth as seen from orbit 443 million years ago; Earth from space; plate tectonics; lithosphere; seafloor spreading; continental drift; tectonophysics - Natural History Illustration Geologic Time Scale

 Era: Paleozoic
  Period: Silurian
   Epoch: Llandovery
    Age: Rhuddanian


Silurian Earth

This is how the Earth may have appeared 443 million years ago during the Silurian period.

The northern most continent is what would become today's Siberia and to the west of that is the Panthalassic Ocean. South of the equator to the east is the early-Palaeozoic continent of Baltica later to form part of Eurasia, while to the east is the continent of Laurentia later to become the core of North America. Further south is the Rheic Ocean and to the west the Iapetus Ocean.



Copyright Walter B. Myers. All rights reserved.

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