Cidaris Urchin
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| phylum | Echinodermata | The genus Cidaris contains several extant species of pencil sea urchins and many extinct species that range back to the Upper Triassic. The Geoworld figure is Jurassic, dated at 170 million years. Size was a maximum of 4 inches. The species name was not identified.
For more information, visit the Wikipedia entry. Get back to Sea urchin |
| class | Echinoidea | |
| order | Cidaroida | |
| family | Cidaridae | |
| genus | Cidaris |
