Eucidaris thouarsii
| Slate pencil urchin | |
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| Eucidaris (thouarsii) galapagensis on Santiago Island, Galápagos | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Echinodermata |
| Class: | Echinoidea |
| Subclass: | Perischoechinoidea |
| Order: | Cidaroida |
| Family: | Cidaridae |
| Genus: | Eucidaris |
| Species: | E. thouarsii |
| Binomial name | |
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Eucidaris thouarsii (L. Agassiz & Desor, 1846) |
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The slate pencil urchin, Eucidaris thouarsii, is a species of cidaroid sea urchins that inhabits littoral regions of the East Pacific Ocean.
E. thouarsii is found in the East Pacific at depths of 0–45 m (0–148 ft), ranging from Baja California to Panama, as well as Cocos Island, Clipperton Island and the Galápagos Islands. The Galápagos, Clipperton and Cocos populations are now often recognized as a separate species, E. galapagensis, instead of a subspecies of E. thouarsii.
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Wikipedia