| Maretiidae | |
|---|---|
 | |
| Maretia planulata | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Echinodermata |
| Class: | Echinoidea |
| Order: | Spatangoida |
| Family: | Maretiidae Lambert, 1905 |
Maretiidae is a family of echinoderms belonging to the order Spatangoida. [1]
Genera: [1]
Coelopleurus is an extant genus of echinoids with fossil records dating back to the Eocene, with remains found in Europe and North America.
The heart urchins or Spatangoida are an order of sea urchins.
Cidaridae is a family of sea urchins in the order Cidaroida.
Spatangus is a genus of heart urchins in the Spatangidae family. The genus is synonymous with the previously recognised genera Prospatangus Lambert, 1902 and Spatagus. There are nine recognised species. The type species is Spatangus purpureus Müller, 1776 by subsequent designation.
Toxopneustidae is a family of globular sea urchins in the class Echinoidea.
Clypeaster, common name "cake urchins" or "sea biscuits", is a genus of echinoderms belonging to the family Clypeasteridae.
The Echinometridae are a family of sea urchins in the class Echinoidea.
Schizaster is a genus of heart urchins belonging to the family Schizasteridae. The type species of the genus is Schizaster studeri.
Araeosoma is a genus of deep-sea sea urchins in the family Echinothuriidae.
Histocidaris is a genus of sea urchins in the family Histocidaridae. Some species are known from the fossil record.
Caenopedina is a genus of sea urchins of the family Pedinidae.
Schizasteridae is a family of echinoderms belonging to the order Spatangoida.
Stylocidaris is a genus of echinoderms belonging to the family Cidaridae.
Echinoneidae is a family of echinoderms belonging to the order Echinoneoida.
Stomopneustidae is a family of echinoderms belonging to the order Stomopneustoida.
Echinocyamus is a genus of echinoderms belonging to the family Fibulariidae.
Prionocidaris is a genus of echinoderms belonging to the family Cidaridae.
Spatagobrissus is a genus of echinoderms belonging to the family Maretiidae.
Echinolampas is a genus of echinoderms belonging to the family Echinolampadidae.
Paleopneustina is a suborder of sea urchins of the order Spatangoida. Its taxonomy is still under investigation.
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