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 - Diplodocus and pterodactyls; diplodocids; sauropods; herbivores; Late Jurassic; Upper Jurassic; Tithonian age; pterosaurs - Natural History Illustration Geologic Time Scale

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


Diplodocus and pterodactyls

Dinosaur sauropods of the genus Diplodocus leisurely graze on sparse vegetation while several pterodactyls pass overhead 150 million years ago in what is today North America. 115 feet long and weighing over 10 tons, from the tip of tail to its diminutive head Diplodocus is the longest known dinosaur.



Copyright Walter B. Myers. All rights reserved.

Terms of use

Home | What's New | The Graphics | Information | Site Map |  ]