Paleozoic Earth ] Back | Next >

Location
 Worldwide
 365 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 - A Late Devonian Ichthyostega underwater; Famennian stage; missing link; tetrapod; paleontology; paleobiology; paleobotany - Natural History Illustration Geologic Time Scale

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

     
 

Ichthyostega underwater

A Late Devonian tetrapod of the genus Ichthyostega submerged in a floodplain 365 million years ago in what is today the Canadian Arctic. The tree-like trunk immediately behind the Ichthyostega is the base of a Pleuromeia. The Ichthyostega is eyeing a drowned centipede.

Ichthyostega was one of the earliest tetrapods, a descendent of lobe-finned fishes and ancestor of amphibians. Ichthyostega had lungs and seven-toed limbs that allowed it to move about the shallow waters and shores of swamps and floodplains. It was among the first terrestrial vertebrates.

 

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Copyright Walter B. Myers. All rights reserved.

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