Mesozoic Earth ] Back | Next >

 North America
 215 million years ago

Mean atmospheric O2
 80% of modern level

Mean atmospheric CO2
 6x pre-industrial level

Mean temperature
 3C above modern level


Mesozoic Earth - Coelophysis amongst Araucaria conifers and seed cones - Natural History Illustration Geologic Time Scale

 Era: Mesozoic
  Period: Triassic
   Epoch: Late
    Age: Norian


Coelophysis amongst Araucaria

Three carnivorous dinosaur theropods of the genus Coelophysis, one male and two females, walk amongst a forest of evergreen coniferous trees of the genus Araucaria 215 million years ago in what is today the southwestern United States.

Coelophysis is one of the earliest known dinosaurs emerging during the late Triassic period. It stood only as tall as a man's hip and probably was an agile and fast runner.



Copyright Walter B. Myers. All rights reserved.

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