Borealopelta! an exquisitly preserved Ankylosaur from North America, we know thanks to its preserved pigment cells that it was countershaded: rust red on top and sand-ish brown on the bottom!

(image courtesy of the museum)

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2023-03-14

Pheomelanin is responsible for reddish colouration in animals, this along with an observed countershaded pattern, and there you have it.
Image credit:- Royal Tyrell Museum (beautiful artwork, probably one of my favourites)

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2022-01-09

a commission of Countershade

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2017-07-10