Paleozoic Earth ] Back | Next >

 North America
 280 million years ago

Mean atmospheric O2
 115% of modern level

Mean atmospheric CO2
 3x pre-industrial level

Mean temperature
 2C above modern level


Paleozoic Earth - Dimetrodon lakeside with Corodite & Glossopteris - Natural History Illustration Geologic Time Scale

 Era: Paleozoic
  Period: Permian
   Epoch: Cisuralian
    Age: Artinskian


Dimetrodon lakeside

A pair of carnivorous synapsids from the genus Dimetrodon explore an Early Permian landscape 280 million years ago. The tree on the left is a gymnosperm of the genus Cordaites, an ancient ancestor of today's conifers, and on the far right is a seed fern of the genus Glossopteris, a plant that came to dominate this period with over 70 species.



Copyright Walter B. Myers. All rights reserved.

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