Paleozoic Earth ] Back | Next >

Location
 Ocean bottom
 460 million years ago

Mean atmospheric O2
 63% of modern level

Mean atmospheric CO2
 16x pre-industrial level

Mean temperature
 7C above modern level

 

Paleozoic Earth - Trilobite Paraceraurus on the bottom of a Middle Ordovician sea; Iapetus Ocean; Phoibic Ocean; Tornquist Sea; Paleoasiatic Ocean; Ural Ocean; Rheic Ocean - Natural History Illustration Geologic Time Scale

Era: Paleozoic
 Period: Ordovician
  Epoch: Middle
   Age: Darriwilian

     
 

Paraceraurus trilobite

A six-inch-long trilobite of the genus Paraceraurus on the bottom of a Middle Ordovician sea 460 million years ago near what is today Russia. 

 

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Copyright Walter B. Myers. All rights reserved.

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