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 265 million years ago

Mean atmospheric O2
 115% of modern level

Mean atmospheric CO2
 3x pre-industrial level

Mean temperature
 2C above modern level


Paleozoic Earth - A pair of Doliosauriscus facing off in a mid-Permian desert 265 million years ago in what is today Russia; dinocephalian therapsids; Dinocephalia; Anteosaurids; terrestrial vertebrates  - Natural History Illustration Geologic Time Scale

 Era: Paleozoic
  Period: Permian
   Epoch: Guadalupian
    Age: Capitanian



12-foot-long dinocephalian therapsids of the genus Doliosauriscus face off in a dry mid-Permian landscape 265 million years ago in what is today Russia. On the horizon is a synapsid of the genus Dimetrodon. Vegetation includes various ferns and cycads.

Similar to its better-known relative Titanophoneus, Doliosauriscus was a carnivore, one of the largest predators of its time with large dagger-like canines in front and sharp incisors and flat molars in back for grinding up flesh.



Copyright Walter B. Myers. All rights reserved.

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