252mya:

Wiwaxia sp.

Artwork by Julio Lacerda / @paleoart

This
scaly creature lived over 500 million years ago all over the globe,
with the best-preserved fossils found in the Burgess Shale in Canada.
Detailed examination of the spines shows that they were iridescent in
life.

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252MYA creates custom-made artwork for private collections and editorial, scientific, or educational projects.