Heterocentrotus | |
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Scientific classification | |
Kingdom: | Animalia |
Phylum: | Echinodermata |
Class: | Echinoidea |
Order: | Echinoida |
Family: | Echinometridae |
Genus: | Heterocentrotus |
Species: | see text |
Heterocentrotus is a genus of slate pencil urchins, part of the familia Echinometridae.
This genus contains two species:
Radiols (spikes) of a "slate pencil sea urchin" (Heterocentrotus mamillatus). They are a classical souvenir.