Coelopleurus is an extant genus of echinoids with fossil records dating back to the Eocene,[1] with remains found in Europe and North America.

These abyssal sea urchins are characterized by their surprisingly bright color pattern, usually red and white.

Even more surprisingly, their tests (skeletons) are brightly colored, too, even after drying, or sometimes fossilization.

[2] According to World Register of Marine Species:[3] Fossil species:

This article about a sea urchin is a stub.