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 95 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 - A Crichtonsaurus crossing paths with frogs in a dark Cretaceous conifer forest of Wollemi Pine & ferns - Natural History Illustration Geologic Time Scale

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


Crichtonsaurus & frogs

A ten-foot-long ankylosaurid ankylosaur dinosaur of the genus Crichtonsaurus crosses paths with a pair of amphibians from the order anura (AKA frogs) deep within a Cretaceous forest 95 million years ago. The heavily armored Crichtonsaurus was an herbivore and therefore unlikely to have any interest in frogs as food, while the carnivorous frogs are doubtless in search of smaller prey. The forest is populated with various ferns and the conifer-like Wollemi Pine (not a true conifer, rather an Araucariaceae more closely related to the Monkey Puzzle tree).

Crichtonsaurus is named after the late American author Michael Crichton whose novels included the dinosaur thriller Jurassic Park.



Copyright Walter B. Myers. All rights reserved.

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