Mesozoic Earth ] Back | Next >

 Wyoming, USA
 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 - An adult Torosaurus compared to a modern adult White Rhinoceros; rhino; herbivores; cerapods; ceratopsidae; ceratopsids; Mesozoic; Cretaceous; scale reference - Natural History Illustration Geologic Time Scale

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


Torosaurus & White Rhinoceros compared

An adult ceratopsid dinosaur of the genus Torosaurus from 75 million years ago is compared to a modern adult White Rhinoceros (Ceratotherium simum). The Torosaurus is 6 and a half feet tall at the shoulder and weighs 10,000 pounds*, while the White Rhinoceros is 6 feet tall at the shoulder and weighs 7,000 pounds.

* Values are estimates only based upon available paleontological data.



Copyright Walter B. Myers. All rights reserved.

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