Mesozoic Earth ] Back | Next >

 North America
 150 million years ago

Mean atmospheric O2
 130% of modern level

Mean atmospheric CO2
 7x pre-industrial level

Mean temperature
 3C above modern level

Mesozoic Earth - A Torvosaurus relaxing among ferns and cycads 150 million years ago in what is today Colorado; Megalosauridae - Natural History Illustration Geologic Time Scale

 Era: Mesozoic
  Period: Jurassic
   Epoch: Late
    Age: Kimmeridgian


Torvosaurus and rainbow

A Megalosaurid theropod dinosaur of the genus Torvosaurus relaxes among cycads and ferns 150 million years ago in what is today Colorado. In the background are juniper and ginkgo and in the sky flying reptiles of order Pterosauria.

A meat-eater that grew to 35 feet long and weighed two tons, Torvosaurus was one of the largest carnivores of its time.



Copyright Walter B. Myers. All rights reserved.

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