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Location
 China
 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 - Mamenchisaurus hochuanensis grazing amongst cycads, juniper and ginkgo 150 million years ago in what is today China; dinosaurs; sauropods; Sauropoda; herbivores - Natural History Illustration Geologic Time Scale

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

     
 

Mamenchisaurus hochuanensis

Sauropods of the species Mamenchisaurus hochuanensis graze amongst cycads, juniper and ginkgo 150 million years ago in what is today China. About 70 feet long and weighing 40 to 50 tons Mamenchisaurus hochuanensis had one of the longest necks of any known animal.

 

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