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Heterocentrotus

Heterocentrotus
Heterocentrotus mamillatus 1.jpg
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:


Heterocentrotus mamillatus

Heterocentrotus trigonarius

Radiols (spikes) of a "slate pencil sea urchin" (Heterocentrotus mamillatus). They are a classical souvenir.




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Wikipedia

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