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 120 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 feathered Microraptor roosts atop a tree fern 120 million years ago in what is today Asia; Early Cretaceous; Jiufotang Formation; pennaceous feathers - Natural History Illustration Geologic Time Scale

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


Microraptor and fern forest

A feathered dromaeosaurid dinosaur of the genus Microraptor alights atop a tree fern 120 million years ago in what is today Liaoning, China.

Like the earlier Archaeopteryx, Microraptor was about size of a modern European Magpie and is one of smallest dinosaurs ever discovered. Microraptor's entire body was covered with feathers including a broad stabilizing tail and elongated feathers for flying on both its arms and legs, leading to its classification as a four-winged dromaeosaur.



Copyright Walter B. Myers. All rights reserved.

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