Prehistoric Photograph - Evolution Of Feathers by Mikkel Juul Jensen

Evolution Of Feathers is a photograph by Mikkel Juul Jensen which was uploaded on August 4th, 2016.

Evolution Of Feathers

Evolution of feathers. Artwork showing the evolution of feathers in dinosaurs and birds, from primitive forms at left, to forms more adapted to... more

by Mikkel Juul Jensen

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Framed Print

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Title

Evolution Of Feathers

Artist

Mikkel Juul Jensen

Medium

Photograph

Description

Evolution of feathers. Artwork showing the evolution of feathers in dinosaurs and birds, from primitive forms at left, to forms more adapted to flight at right. At far left is a hollow filament or spine. This was followed by filamentous forms (centre left). At centre, a primitive feather has a central rachis but the barbs are not joined. At centre right is a pennaceous feather, the type found in modern birds. This one is symmetrical about the central rachis and the barbs are joined together. At far right is a pennaceous feather that is non-symmetrical about the central rachis. This evolution took place over tens of millions of years (Jurassic to Cretaceous).

Uploaded

August 4th, 2016