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Temporal range: Eocene–Present
Coelopleurus floridanus
Scientific classification
Kingdom: Animalia
Phylum: Echinodermata
Class: Echinoidea
Subclass: Euechinoidea
Order: Arbacioida
Family: Arbaciidae
Genus: Coelopleurus

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 fossilisation.[2]


According to World Register of Marine Species:[3]

, fossil species

  • Coelopleurus elegans (Bell), from the Pleistocene of the Jizo-do formation of Japan[4]


  1. ^ Fossils (Smithsonian Handbooks) by David Ward (p. 179)
  2. ^ Mah, Christopher L. "Coelopleurus : The most gorgeous urchin you never heard of!". The Echinoblog. .
  3. ^ Coelopleurus on WoRMS.
  4. ^ Coelopleurus elegans (Bell) at

Further reading[edit]

External links[edit]