Mesozoic Earth ] Back | Next >

Location
 North America
 68 million years ago

Mean atmospheric O2
 150% of modern level

Mean atmospheric CO2
 6x pre-industrial level

Mean temperature
 4C above modern level

Mesozoic Earth - A Tyrannosaurus wanders a Cretaceous forest 68 million years ago in what is today the western United States; theropod; bipedal carnivore; apex predator; scavenger; tyrannosaurid - Natural History Illustration Geologic Time Scale

 Era: Mesozoic
  Period: Cretaceous
   Epoch: Late
    Age: Maastrichtian

     
 

Tyrannosaurus roaring

A seven ton coelurosaurian theropod dinosaur of the genus Tyrannosaurus wanders a Cretaceous forest 68 million years ago in what is today the western United States.

 

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Copyright Walter B. Myers. All rights reserved.

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