Mesozoic Earth ] Back | Next >

 North America
 75 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 - Two Parasaurolophus and a waterfall; Hadrosaurid; duck-billed dinosaur - Natural History Illustration Geologic Time Scale

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


Parasaurolophus and waterfall

A pair of 3 ton plant-eating ornithopod dinosaurs of the genus Parasaurolophus dine on flora near a waterfall 75 million years ago in North America. Similar to plant-eating Lambeosaurus of the same period, these dinosaurs also sported a distinctive hollow cranial crest.




Copyright Walter B. Myers. All rights reserved.

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