Eucidaris thouarsii
| Eucidaris thouarsii | |
|---|---|
| Eucidaris thouarsii in the Gulf of California | |
| Scientific classification | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Echinodermata |
| Class: | Echinoidea |
| Order: | Cidaroida |
| Family: | Cidaridae |
| Genus: | Eucidaris |
| Species: | E. thouarsii |
| Binomial name | |
| Eucidaris thouarsii (Agassiz & Desor, 1846) | |
Eucidaris thouarsii, the slate pencil urchin (named after slate pencil), is a species of cidaroid sea urchins that inhabits littoral regions of the East Pacific Ocean.