Paleozoic Earth ] Back | Next >

Location
 Worldwide
 380 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 - Drepanaspis gemuendenensis on the bottom of a shallow Devonian sea 380 million years ago; Panthalassa; Panthalassic Ocean; Paleo Tethys Sea - Natural History Illustration Geologic Time Scale

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

     
 

Drepanaspis portrait

An 8-inch-long primitive jawless fish of the species Drepanaspis gemuendenensis settles on the bottom of a shallow Devonian sea 380 million years ago. With a flat, paddle-shaped head and upwards-facing jawless mouth, Drepanaspis was one of the more unique sea creatures of its time. Based upon its overall shape it is believed to have been a bottom feeder, though it's not known what it would have eaten.

 

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Copyright Walter B. Myers. All rights reserved.

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