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 125 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 - Flying Zhenyuanopterus congregating around a bluff supporting redwoods 125 million years ago in what is today China; boreopterid pterodactyloid pterosaurs; Sequoias - Natural History Illustration Geologic Time Scale

 Era: Mesozoic
  Period: Cretaceous
   Epoch: Early
    Age: Barremian



Pterosaurs of the genus Zhenyuanopterus congregate on a bluff supporting redwood coniferous trees, ferns and Ginkgos 125 million years ago in what is today China.

With a wingspan of 12 feet and long needle-like teeth, Zhenyuanopterus was a carnivorous flying reptile that likely preyed upon aquatic life.



Copyright Walter B. Myers. All rights reserved.

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