| Schizaster Temporal range:
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| Fossil of Schizaster species from Italy | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Echinodermata |
| Class: | Echinoidea |
| Order: | Spatangoida |
| Family: | Schizasteridae |
| Genus: | Schizaster L. Agassiz, 1835 |
| Synonyms | |
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Schizaster is a genus of heart urchins belonging to the family Schizasteridae. The type species of the genus is Schizaster studeri.