Paleozoic Earth ] Back | Next >

Location
 Worldwide
 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 - Primitive lungfish of the genus Dipterus emerging from a Late Devonian fresh water lake 385 million years ago in what is today North America - Natural History Illustration Geologic Time Scale

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

     
 

Dipterus ashore

Primitive lungfish (fish equipped with rudimentary lungs as well as gills) of the genus Dipterus emerge from a Late Devonian fresh water lake 385 million years ago in what is today North America. Large terrestrial flora include varieties of lycopods and tree-like plants of the genus Archaeopteris dominate the landscape. The underbrush suggests how younger versions of these plants may have appeared, however it's not necessarily representative of any specific flora.

Dipterus were among the first vertebrates to venture from aquatic environments, though they were not ancestors of the earliest tetrapods which appeared some 20 million years later.

 

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Copyright Walter B. Myers. All rights reserved.

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